Updated on 2025/09/30

写真a

 
TERANISI Takasi
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Associate Professor
Position
Associate Professor
External link

Degree

  • 博士(工学) ( 2010.9   東京工業大学 )

  • 修士(工学) ( 2006.3   東京工業大学 )

  • 学士(工学) ( 2004.3   東京工業大学 )

Research Interests

  • ferroelectrics

  • ミリ波焼成プロセス

  • Lithium ion battery

Research Areas

  • Nanotechnology/Materials / Inorganic materials and properties

  • Nanotechnology/Materials / Applied physical properties

  • Nanotechnology/Materials / Crystal engineering

Education

  • Tokyo Institute of Technology   理工学研究科   材料工学

    - 2010

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    Country： Japan

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  • Tokyo Institute of Technology   工学部   無機材料工学科

    - 2004

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    Country： Japan

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Research History

  • The Graduate School of Natural Science and Technology, Okayama University   Associate Professor

    2018.4

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Committee Memberships

  • 日本セラミックス協会   セッションオーガナイザー  

    2018.4   

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  • 日本セラミックス協会   中四国支部運営委員  

    2013   

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Papers

  • Fabrication of Mullite Based Porous Ceramics with Favorable Creep Resistance Utilizing Superplastically Foaming Method

    Ryotaro Yokota, Sakiho Arizuka, Wakuya Miyamoto, Shinya Kondo, Takashi Teranishi, Akira Kishimoto

    Journal of the Japan Society of Powder and Powder Metallurgy   72 ( Supplement )   S761 - S766   2025.3

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Powder and Powder Metallurgy  

    DOI： 10.2497/jjspm.15f-t14-02

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  • Permittivity and remanent polarization contributions to the electrocaloric effect in (Ba, Sr)TiO3 under unipolar field

    Yukiya Tanaka, Ryo Iguchi, Takashi Teranishi, Shinya Kondo, Akira Kishimoto

    Applied Physics Letters   126 ( 13 )   2025.3

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    Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    The electrocaloric effect (ECE)-induced temperature change (ΔT) in (Ba, Sr)TiO3-based ferroelectrics under unipolar electric fields was analyzed from the separate contributions of the dielectric constant (ε) and remanent polarization (Pr) based on the Maxwell relation. Consideration of the contributions of both ε and Pr is particularly important in a unipolar electric field operation, such as on/off field switching used in device applications. Direct ΔT measurements were also performed based on the lock-in thermography technique to verify the accuracy of the ΔT intensity estimated by the indirect method. The indirect and direct ΔT values were largely consistent. The ΔT intensity near the peak temperature of ΔT was dominated by the Pr contribution; a large ∂Pr/∂T was necessary to increase the overall ΔT magnitude. In contrast, a large ∂ε/∂T was essential to expand the operating temperature range of ΔT at temperatures higher than the dielectric maximum temperature. Quantitative understanding of the contributions of both ε and Pr to ΔT in unipolar electric fields is expected to guide the search for materials with a superior ECE.

    DOI： 10.1063/5.0259805

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  • Dynamic domain motion enhancing electro-optic performance in ferroelectric films

    Shinya Kondo, Kazuki Okamoto, Osami Sakata, Takashi Teranishi, Akira Kishimoto, Takanori Nagasaki, Tomoaki Yamada

    Applied Physics Letters   126 ( 1 )   2025.1

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    Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    With the rapid advancement of information technology, there is a pressing need to develop ultracompact and energy-efficient thin-film-based electro-optic (EO) devices. A high EO coefficient in ferroelectric materials is crucial. However, substrate clamping can positively or negatively influence various physical properties, including the EO response of these films, thus complicating the development of next-generation thin-film-based devices. This study demonstrates that reversible dynamic domain motion, achieved through substrate clamping, significantly enhances the EO coefficient in epitaxial ferroelectric rhombohedral Pb(Zr, Ti)O3 thin films, where the (111) and (111¯) domains coexist with distinct optical axes. In principle, this approach can be applied to different film-substrate systems, thereby contributing to the advancement of sophisticated EO devices based on ferroelectrics.

    DOI： 10.1063/5.0244707

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  • Doping Rare Earth Dependent Mechanical Strength Improvement on Reduction of Ceria Based Solid Electrolytes

    Taiga UEHARA, Shinya KONDO, Takashi TERANISHI, Akira KISHIMOTO

    Journal of the Japan Society of Powder and Powder Metallurgy   71 ( 11 )   529 - 533   2024.11

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Powder and Powder Metallurgy  

    DOI： 10.2497/jjspm.23-00058

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  • Colossal Dielectric Constant of Nanocrystalline/Amorphous Homo-Composite BaTiO3 Films Deposited via Pulsed Laser Deposition Technique

    Shinya Kondo, Taichi Murakami, Loick Pichon, Joël Leblanc-Lavoie, Takashi Teranishi, Akira Kishimoto, My Ali El Khakani

    Nanomaterials   14 ( 20 )   1677 - 1677   2024.10

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    Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

    We report the pulsed laser deposition (PLD) of nanocrystalline/amorphous homo-composite BaTiO3 (BTO) films exhibiting an unprecedented combination of a colossal dielectric constant (εr) and extremely low dielectric loss (tan δ). By varying the substrate deposition temperature (Td) over a wide range (300–800 °C), we identified Td = 550 °C as the optimal temperature for growing BTO films with an εr as high as ~3060 and a tan δ as low as 0.04 (at 20 kHz). High-resolution transmission electron microscopy revealed that the PLD-BTO films consist of BTO nanocrystals (~20–30 nm size) embedded within an otherwise amorphous BTO matrix. The impressive dielectric behavior is attributed to the combination of highly crystallized small BTO nanograins, which amplify interfacial polarization, and the surrounding amorphous matrix, which effectively isolates the nanograins from charge carrier transport. Our findings could facilitate the development of next-generation integrated dielectric devices.

    DOI： 10.3390/nano14201677

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  • Polarization at the compositional interface in Nb-doped metastable TiO2-SnO2 solid solutions

    Takashi Teranishi, Junsuke Satake, Shinya Kondo, Akira Kishimoto

    Japanese Journal of Applied Physics   63 ( 7 )   07SP05 - 07SP05   2024.7

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    Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    Abstract

    Polarization architecture was incorporated into metastable Nb-doped TiO2-SnO2 to deliver electron accumulation at the localized TiO2-SnO2 compositionally fluctuating interface. Specimens were quenched from various holding temperatures to ambient temperatures in air to avoid bimodal decomposition into TiO2 and SnO2 endmembers. At the lowest sintering temperature of 1,400 °C, the mixed phase containing TiO2- and SnO2-rich compositions existed as an intermediate state to the single-phase solid solution. The phase boundary became more ambiguous with increasing sintering temperatures, and the compositional fluctuation size reduced to single nanometers at 1,500 °C. The permittivity due to the interfacial polarization, ε interface, increased steadily with increasing sintering temperature. The larger ε interface values at higher temperatures are attributed to the greater density of the compositionally fluctuating phase interface, which leads to greater electron accumulation at the energy barrier between the two semiconducting layers.

    DOI： 10.35848/1347-4065/ad5e8d

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    Other Link： https://iopscience.iop.org/article/10.35848/1347-4065/ad5e8d/pdf

  • Enhanced Charge Accumulation in Activated Carbon via the Dielectric Interface

    Yuji Toyota, Takashi Teranishi, Kosuke Fukui, Masakuni Takahashi, Ji Qiuyu, Shinya Kondo, Masanobu Nakayama, Akira Kishimoto

    ACS Applied Energy Materials   7 ( 4 )   1440 - 1447   2024.2

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    Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

    DOI： 10.1021/acsaem.3c02599

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  • 外場としてのミリ波を援用した高温電気化学デバイスの特性変化

    Takuro FUJIWARA, Takashi TERANISHI, Akira KISHIMOTO, Seiichi SUDA

    Journal of the Japan Society of Powder and Powder Metallurgy   70 ( 9 )   387 - 391   2023.9

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Powder and Powder Metallurgy  

    DOI： 10.2497/jjspm.23-00013

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  • 負膨張材料を分散させた表面層を持つセラミックス積層体の耐熱衝撃性

    Takaya UENO, Shinya KONDO, Takashi TERANISHI, Akira KISHIMOTO

    Journal of the Japan Society of Powder and Powder Metallurgy   70 ( 8 )   376 - 379   2023.8

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Powder and Powder Metallurgy  

    DOI： 10.2497/jjspm.23-00011

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  • Polarization contributions to DC bias characteristics of nanograined BaTiO3-based ceramics

    Takashi Teranishi, Ruku Ozaki, Shinya Kondo, Akira Kishimoto

    Japanese Journal of Applied Physics   62 ( SM )   SM1015 - SM1015   2023.8

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    Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    Abstract

    The domain configuration contributions to the DC bias characteristics of nanograined BaTiO3 were clarified. Domain boundaries became more ambiguous with decreasing grain size (g.s.), whereas domain patterns partially vanished because of the reduction in BT ferroelectricity, in the g.s. range <1 μm. Additionally, intergranular stress increased with decreasing g.s., resulting in crystal lattice hardening in the vicinity of the domain walls (DWs) and suppression of dipole fluctuations in the DWs. These domain structural variations with the domain size (d.s.) reduced permittivity in the absence of a DC electric field, resulting in improvements in permittivity depressions in an electric field (Δε). Magnesium substitution slightly decreased the d.s. The increase in DW density upon Mg loading implied defect pairs, ${ { \rm{Mg } } }_{ { \rm{Ti } } }^{"}$–${ { \rm{V } } }_{ { \rm{o } } }^{\bullet \bullet },$ which acted as new DW pinning centers, thereby subdividing the DWs. The Δε notably improved via Mg loading, because a defect pair effectively pins the DWs under the electric field.

    DOI： 10.35848/1347-4065/ace6a8

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    Other Link： https://iopscience.iop.org/article/10.35848/1347-4065/ace6a8/pdf

  • Spinodal decomposition-derived giant polarization in TiO2–SnO2 generated from a metastable phase Reviewed

    Takashi Teranishi, Hideki Matsui, Shinya Kondo, Akira Kishimoto

    Journal of Applied Physics   133 ( 17 )   2023.5

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：{AIP} Publishing  

    <jats:p>Spinodal decomposition (SD) was incorporated into Nb-doped metastable TiO2–SnO2 to achieve giant interfacial polarization. The dielectric characteristics were analyzed using an equivalent circuit involving electron migration, where the SD bulk is given by the universal dielectric response relation. Both the Nb–TiO2 and the Nb–SnO2 layers showed semiconductive behaviors. With increasing SD treatment temperature, the SD volume fraction increased, as did cation interdiffusion at the SD interface, resulting in a large dielectric loss. The optimal SD temperature was determined as 1100 °C, where the Maxwell–Wagner capacitance showed a very high value of 44.6 μF corresponding to the permittivity at the lowest frequency exceeding 106. Such colossal polarization was considered due to an accumulation of trapped electrons at the Schottky barrier at SD layers with different conductivities.</jats:p>

    DOI： 10.1063/5.0144782

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  • Direct measurement of electrocaloric effect based on multi-harmonic lock-in thermography

    Ryo Iguchi, Daisuke Fukuda, Jun Kano, Takashi Teranishi, Ken-ichi Uchida

    Applied Physics Letters   122 ( 8 )   2023.2

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    Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    We report on a direct measurement method for electrocaloric effects, the heating/cooling upon application/removal of an electric field in dielectric materials, based on a lock-in thermography technique. By use of sinusoidal excitation and multi-harmonic detection, the actual temperature change can be measured by a single measurement in the frequency domain even when the electrocaloric effect shows a nonlinear response to the excitation field. We demonstrated the method by measuring the temperature dependence of the electric-field-induced temperature change in two Sr-doped BaTiO3 systems with different ferroelectric-paraelectric phase transition temperatures, where we introduce the procedure for extracting the pure electrocaloric contribution free from heat losses and Joule heating due to leakage currents. This method can be used irrespective of the type of dielectric material and enables simultaneous estimation of the polarization change and power dissipation during the application of an electric field, making it a convenient imaging measurement method for the electrocaloric effect.

    DOI： 10.1063/5.0137686

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  • Density Functional Theory and Machine Learning-Based Analyses for Improved Surface Stability of a BaTiO3-Coated LiCoO2 Positive Electrode Material

    Kunihiro Ishida, Naoto Tanibata, Hayami Takeda, Masanobu Nakayama, Takashi Teranishi, Naoki Watanabe

    PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS   259 ( 9 )   2022.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/pssb.202100526

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  • Electric Potential Mapping of All-Solid-State Lithium Ion Batteries using A Terahertz Chemical Microscope

    Ryota Tomie, Taketo Yamaguchi, Masashi Shimizu, Kashu Hamada, Takashi Teranishi, Hidetoshi Nose, Masaki Kobayashi, Jin Wang, Kenji Sakai, Toshihiko Kiwa

    2022 47TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ 2022)   2022.8

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/IRMMW-THz50927.2022.9896121

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  • Ceria-based solid electrolyte exhibits superior mechanical and electric properties compared to zirconia-based solid electrolyte

    Akira Kishimoto, Taiga Umemura, Shinya Kondo, Takashi Teranishi

    CERAMICS INTERNATIONAL   48 ( 15 )   21824 - 21831   2022.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.ceramint.2022.04.166

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  • Case report of a Japanese patient with chronic renal failure who developed SARS-CoV-2 in a hospital cluster during treatment for acute respiratory failure: An autopsy report

    Yoshifumi Amari, Satoshi Morimoto, Takashi Teranishi, Mai Ohata, Atsushi Takeshita, Hiroshi Hirano, Hitoshi Kobayashi

    CLINICAL CASE REPORTS   10 ( 7 )   2022.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/ccr3.6024

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  • Capacity retention improvement of LiCoO2 cathodes via their laser-ablation-based nanodecoration by BaTiO3 nanoparticles

    Takashi Teranishi, Yumi Yoshikawa, Joel Leblanc-Lavoie, Nazar Delegan, Ibrahima Ka, Akira Kishimoto, My Ali El Khakani

    JOURNAL OF APPLIED PHYSICS   131 ( 12 )   124105 - 124105   2022.3

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1063/5.0075970

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  • Evaluation of superplastic-foamed zirconia-based ceramics using foaming agent and a superplasticity facilitator derived from rice husk

    Akira Kishimoto, Kentaro Tanaka, Takashi Teranishi

    JOURNAL OF POROUS MATERIALS   29 ( 1 )   153 - 159   2022.2

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    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s10934-021-01156-3

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    Other Link： https://link.springer.com/article/10.1007/s10934-021-01156-3/fulltext.html

  • Ultrafast Ion Transport via Dielectric Nanocube Interface

    Takashi Teranishi, Ryoji Yamanaka, Ken-ichi Mimura, Mika Yoneda, Shinya Kondo, Kazumi Kato, Akira Kishimoto

    ADVANCED MATERIALS INTERFACES   9 ( 4 )   2022.2

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/admi.202101682

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  • Development of impedance measurement of lithium ion batteries electrode using terahertz chemical microscope

    Masashi Shimizu, Ryoji Yamanaka, Takashi Teranishi, Jin Wang, Kenji Sakai, Keiji Tsukada, Toshihiko Kiwa

    ELECTRICAL ENGINEERING IN JAPAN   214 ( 4 )   2021.12

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/eej.23355

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    Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/eej.23355

  • A surface-supporting method for an anode material of Li4Ti5O12 via an epitaxial thin film approach

    Sou Yasuhara, Shintaro Yasui, Takashi Teranishi, Takuya Hoshina, Takaaki Tsurumi, Mitsuru Itoh

    JAPANESE JOURNAL OF APPLIED PHYSICS   60 ( SF )   2021.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.35848/1347-4065/ac15a8

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  • Influence of orientation on the electro-optic effect in epitaxial Y-doped HfO2 ferroelectric thin films

    Shinya Kondo, Reijiro Shimura, Takashi Teranishi, Akira Kishimoto, Takanori Nagasaki, Hiroshi Funakubo, Tomoaki Yamada

    JAPANESE JOURNAL OF APPLIED PHYSICS   60 ( SF )   2021.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.35848/1347-4065/ac17e0

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    Other Link： https://iopscience.iop.org/article/10.35848/1347-4065/ac17e0/pdf

  • Revealing intrinsic electro-optic effect in single domain Pb(Zr, Ti)O-3 thin films

    Shinya Kondo, Tomoaki Yamada, Masahito Yoshino, Takashi Teranishi, Akira Kishimoto, Takanori Nagasaki

    APPLIED PHYSICS LETTERS   119 ( 10 )   102902 - 102902   2021.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1063/5.0056121

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  • Development of impedance measurement of lithium ion batteries electrode using terahertz chemical microscope

    Masashi Shimizu, Ryoji Yamanaka, Takashi Teranishi, Jin Wang, Kenji Sakai, Keiji Tsukada, Toshihiko Kiwa

    IEEJ Transactions on Sensors and Micromachines   141 ( 8 )   273 - 278   2021.8

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineers of Japan  

    DOI： 10.1541/ieejsmas.141.273

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  • Linear electro-optic effect in ferroelectric HfO2-based epitaxial thin films

    Shinya Kondo, Reijiro Shimura, Takashi Teranishi, Akira Kishimoto, Takanori Nagasaki, Hiroshi Funakubo, Tomoaki Yamada

    JAPANESE JOURNAL OF APPLIED PHYSICS   60 ( 7 )   070905 - 070905   2021.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.35848/1347-4065/ac087d

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    Other Link： https://iopscience.iop.org/article/10.35848/1347-4065/ac087d/pdf

  • Suppression Mechanisms of the Solid-Electrolyte Interface Formation at the Triple-Phase Interfaces in Thin-Film Li-Ion Batteries

    Sou Yasuhara, Shintaro Yasui, Takashi Teranishi, Osami Sakata, Takuya Hoshina, Takaaki Tsurumi, Yutaka Majima, Mitsuru Itoh

    ACS APPLIED MATERIALS & INTERFACES   13 ( 29 )   34027 - 34032   2021.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acsami.1c05090

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  • Surface-supporting method of micropad deposition onto LiCoO2 epitaxial thin films to improve high C-rate performance

    Sou Yasuhara, Shintaro Yasui, Takashi Teranishi, Takuya Hoshina, Takaaki Tsurumi, Mitsuru Itoh

    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   129 ( 7 )   415 - 418   2021.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.2109/jcersj2.20237

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  • Ultrafast charge transfer at the electrode electrolyte interface via an artificial dielectric layer

    Takashi Teranishi, Kaisei Kozai, Sou Yasuhara, Shintaro Yasui, Naoyuki Ishida, Kunihiro Ishida, Masanobu Nakayama, Akira Kishimoto

    JOURNAL OF POWER SOURCES   494   2021.5

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.jpowsour.2021.229710

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  • Controlled colossal polarization originating in the Li-ion conductor-dielectric interface

    Takashi Teranishi, Yuki Nishikori, Mika Yoneda, Akira Kishimoto

    JAPANESE JOURNAL OF APPLIED PHYSICS   60 ( 4 )   2021.4

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.35848/1347-4065/abf088

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  • Investigation of Cross-Section Measurement Method for All-Solid-State Batteries Using Terahertz Chemical Microscopy

    Masashi Shimizu, Ryota Tomie, Kashu Hamada, Takashi Teranishi, Jin Wang, Kenji Sakai, Toshihiko Kiwa

    2021 46TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ)   2021

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/IRMMW-THz50926.2021.9567015

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  • Electric Potential Distribution on Lithium Ion Battery Cathodes Measured Using Terahertz Chemical Microscopy Reviewed

    Toshihiko Kiwa, Yuki Akiwa, Hayato Fujita, Takashi Teranishi, Kenji Sakai, Hidetoshi Nose, Masaki Kobayashi, Keiji Tsukada

    JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES   41 ( 4 )   430 - 437   2020.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s10762-019-00640-x

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  • Influence of Reduction Annealing on the Characteristics of CeO<sub>2</sub> – YSZ Based Oxide Ceramics

    Taiga UMEMURA, Takashi TERANISHI, Akira KISHIMOTO

    Journal of the Japan Society of Powder and Powder Metallurgy   67 ( 3 )   163 - 166   2020.3

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Powder and Powder Metallurgy  

    DOI： 10.2497/jjspm.67.163

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  • High-frequency dielectric characterization of electronic defect states in co-sputtered W-doped TiO2

    N. Delegan, T. Teranishi, M. A. El Khakani

    Journal of Applied Physics   125 ( 20 )   205103 - 205103   2019.5

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    Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    DOI： 10.1063/1.5087061

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  • Enhancement of Ultrahigh Rate Chargeability by Interfacial Nanodot BaTiO3 Treatment on LiCoO2 Cathode Thin Film Batteries

    Sou Yasuhara, Shintaro Yasui, Takashi Teranishi, Keisuke Chajima, Yumi Yoshikawa, Yutaka Majima, Tomoyasu Taniyama, Mitsuru Itoh

    Nano Letters   19 ( 3 )   1688 - 1694   2019.2

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    Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

    DOI： 10.1021/acs.nanolett.8b04690

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  • Utilizing Rice Husk for Ceramic and Glass Foams as Matrix and Foaming Agent

    Chiaki MATSUOKA, Takashi TERANISHI, Hidetaka HAYASHI, Akira KISHIMOTO

    Journal of the Japan Society of Powder and Powder Metallurgy   65 ( 8 )   475 - 480   2018.8

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Powder and Powder Metallurgy  

    DOI： 10.2497/jjspm.65.475

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  • Aluminum Interdiffusion into LiCoO2 Using Atomic Layer Deposition for High Rate Lithium Ion Batteries Reviewed

    T. Teranishi, Y. Yoshikawa, M. Yoneda, A. Kishimoto, J. Halpin, S. O’Brien, M. Modreanu, I. M. Povey

    ACS Appl. Energy Mater.   1   3277 - 3282   2018.6

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  • Low-temperature High-rate Capabilities of Lithium Batteries via Polarization-assisted Ion Pathways Reviewed

    T. Teranishi, N. Katsuji, K. Chajima, S. Yasuhara, M. Inohara, Y. Yoshikawa, S. Yasui, H. Hayashi, A. Kishimoto, M. Itoh

    Advanced Electronic Materials   4   1700413   2018.3

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  • Domain engineering enhanced microwave tunability in nonstoichiometric Ba0.8 Sr0.2 TiO3 Reviewed

    Takashi Teranishi, Koji Osaki, Hidetaka Hayashi, Akira Kishimoto

    Journal of the American Ceramic Society   101 ( 2 )   723 - 731   2018.2

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    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Wiley  

    DOI： 10.1111/jace.15242

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  • Millimeter-wave irradiation heating for operation of doped CeO2 electrolyte-supported single solid oxide fuel cell Reviewed

    Salmie S. C. Abdullah, T. Teranishi, H. Hayashi and A. Kishimoto

    Journal of Power Sources   374   92 - 96   2018.1

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  • Synthesis of nano-crystalline LiNbO3-decorated LiCoO2 and resulting high-rate capabilities Reviewed

    Takashi Teranishi, Masahiro Inohara, Jun Kano, Hidetaka Hayashi, Akira Kishimoto, Koji Yoda, Hidefumi Motobayashi, Yuzo Tasaki

    SOLID STATE IONICS   314   57 - 60   2018.1

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    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.ssi.2017.11.020

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  • Millimeter-wave irradiation heating for operation of doped CeO 2 electrolyte-supported single solid oxide fuel cell Reviewed

    Salmie Suhana Binti Che Abdullah, Takashi Teranishi, Hidetaka Hayashi, Akira Kishimoto

    Journal of Power Sources   374   92 - 96   2018.1

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.jpowsour.2017.11.036

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  • Effect of Millimeter-wave Irradiation Heating on the Ionic Conductivity of LaGaO<sub>3</sub> Based Ceramics Reviewed

    Yume KUDO, Yuri FUJII, Hideki HASUNUMA, Takashi TERANISHI, Hidetaka HAYASHI, Akira KISHIMOTO

    Journal of the Japan Society of Powder and Powder Metallurgy   65 ( 1 )   21 - 25   2018

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    DOI： 10.2497/jjspm.65.21

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  • Evaluation of Li-ion battery using a Terahertz Chemical Microscope

    Yuki Akiwa, Kentarou Fujiwara, Yumi Yoshikawa, Takashi Teranishi, Kenji Sakai, Toshihiko Kiwa, Keiji Tsukada

    2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)   2018

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  • Relationship between thermal environment and conductivity enhancement under millimeter-wave irradiation heating of zirconia ceramics Reviewed

    KISHIMOTO Akira, SHIMOYAMA Koyo, TERANISHI Takashi, HAYASHI Hidetaka

    Journal of the Ceramic Society of Japan   125 ( 10 )   717 - 720   2017.10

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    Improving the conductivity of 8 mol % yttria-stabilized zirconia (8YSZ) electrolyte has enabled a lowering of the operating temperature of solid oxide fuel cells. We previously reported that millimeter-wave irradiation heating increases the ionic conductivity of ceramics. The ionic conductivity of 8YSZ under millimeter-wave irradiation heating had been up to 20 times higher than that with conventional heating. In the present study, we investigated the optimal thermal environment for millimeter-wave irradiation heating. We also investigated the thermal profile of samples under millimeter-wave irradiation heating to elucidate the rate of the non-thermal effect.

    DOI： 10.2109/jcersj2.17056

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  • Loading effect of a barium titanate artificial interface on high voltage capabilities at high charge and discharge rates Reviewed

    Yoshikawa Yumi, Teranishi Takashi, Hayashi Hidetaka, Kishimoto Akira

    Jpn. J. Appl. Phys.   56 ( 10 )   10PC01 - 4959   2017.9

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    Cyclic characteristics of BaTiO<inf>3</inf>(BT)-decorated LiCoO<inf>2</inf>(LC), for use as an artificial solid electrolyte interface (SEI) were evaluated at high voltages. Within the standard voltage window (i.e., 3.3–4.2 V), the BT-decorated LC exhibited greater capacities for up to 80 cycles compared with both the Al<inf>2</inf>O<inf>3</inf>(paraelectric)-decorated and bare LC SEIs. The discharge capacity retention after 80 cycles (compared with the initial value) was 86.0% for the BT–LC cathode. This is a significant improvement over both the bare LC that showed 19.9% retention and the Al<inf>2</inf>O<inf>3</inf>–LC that displayed 71.5% retention. Thereafter, the cyclic stabilities of the BT–LC and bare LC were compared within potential windows at cutoff voltages as high as 4.9 V. In this region, BT decoration yielded marked improvements in capacity retention after 50 cycles, up to a potential of 4.7 V. The post-situ XRD analysis of the cathode sheets showed that BT decoration effectively stabilized the hexagonal crystal structure of the LC, H1, resulting in the said cyclic stability increase. These observations demonstrate that the use of BT in SEI allows a significant increase in working voltage while maintaining the chemical stability of the underlying LC matrix, a key advancement in the perpetual pursuit of ever higher cell energy densities.

    DOI： 10.7567/JJAP.56.10PC01

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  • Broadband spectroscopy of dielectrics and oxygen-ion conductors Reviewed

    Takashi Teranishi *

    Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Yogyo Kyokai Shi/Journal of the Ceramic Society of Japan, Journal of the Ceramic Society of Japan   125 ( 7 )   547 - 551   2017.7

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    DOI： 10.2109/jcersj2.17083

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  • Electrodeposition of Ni-Al（OH）3 Composite Films from NO3－ Containing Non-Suspended Bath

    Toru ASANO, Hidetaka HAYASHI, Takashi TERANISHI, Akira KISHIMOTO, Kazuya ISHII

    Journal of The Surface Finishing Society of Japan   68 ( 7 )   401 - 404   2017.7

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    DOI： 10.4139/sfj.68.401

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  • Polarization behavior of sol-gel-derived relaxor Ba(Zr, Ti)O3 films Reviewed

    Takashi Teranishi *,Shin Kajiyama,Hidetaka Hayashi*,Akira Kishimoto*

    Journal of the American Ceramic Society   100 ( 4 )   1542 - 1550   2017.4

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    DOI： 10.1111/jace.14768

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  • Effect of the (Ba + Sr)/Ti ratio on the microwave-tunable properties of Ba0.6 Sr0.4 TiO3 ceramics Reviewed

    Takashi Teranishi, Riku Kanemoto, Hidetaka Hayashi, Akira Kishimoto

    Journal of the American Ceramic Society   100 ( 3 )   1037 - 1043   2017.3

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    DOI： 10.1111/jace.14700

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  • Enhanced electrical conductivity of doped CeO2 under millimeter-wave irradiation heating Reviewed

    Salmie Suhana Binti Che Abdullah,Takashi Teranishi *,Hidetaka Hayashi*,Akira Kishimoto*

    Materials and Design, International Journal of Materials in Engineering Applications   115   231 - 237   2017.2

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    DOI： 10.1016/j.matdes.2016.11.051

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  • Performance Improvement of a High-temperature Stress Sensor Incorporated with Flat Pores through a Solid State Foaming Method Reviewed

    64 ( 2 )   68 - 72   2017.2

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  • Gastight, closed pore inclusive porous ceramics through a superplastically foaming method Reviewed

    A. Kishimoto, A. Tohji, T. Teranishi and H. Hayashi

    Ceram. Trans   2016.10

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    DOI： 10.1063/1.4964803

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  • Quantitative study of band structure in BaTiO3 particles with vacant ionic sites Reviewed

    Norihiro Oshime,Jun Kano*,Naoshi Ikeda*,Takashi Teranishi*,Tatsuo Fujii*,Takeji Ueda,Tomoko Ohkubo

    Journal of Applied Physics   120 ( 15 )   2016.10

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    DOI： 10.1063/1.4964803

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  • Influence of PMSA-based polymer on the settling velocity of CNT in Aqueous Media Reviewed

    Naoyuki Nishimura, Shin-Ichi Takeda, Takashi Teranishi, Hidetaka Hayashi, Naoto Saito, Akira Kishimoto

    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy   63 ( 10 )   861 - 865   2016.9

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    DOI： 10.2497/jjspm.63.861

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  • High rate capability of a BaTiO Reviewed

    Teranishi Takashi, Katsuji Naoto, Yoshikawa Yumi, Yoneda Mika, Hayashi Hidetaka, Kishimoto Akira, Yoda Koji, Motobayashi Hidefumi, Tasaki Yuzo

    Jpn. J. Appl. Phys.   55 ( 10 )   10TB01   2016.8

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    Metal organic decomposition (MOD) using octylic acid salts was applied to synthesize a BaTiO<inf>3</inf>–LiCoO<inf>2</inf>(BT–LC) composite powder. The Ba and Ti octylates were utilized as metal precursors, in an attempt to synthesize homogeneous BT nanoparticles on the LC matrix. The BT–LC composite, having a phase-separated composite structure without any impurity phase, was successfully obtained by optimizing the MOD procedure. The composite prepared using octylate precursors exhibited a sharper distribution and better dispersibility of decorated BT particles. Additionally, the average particle size of the decorated BTs using metal octylate was reduced to 23.3 nm, compared to 44.4 nm from conventional processes using Ba acetate as well as Ti alkoxide as precursors. The composite cathode displayed better cell performance than its conventional counterpart; the discharge capacity of the metal octylate-derived specimen was 55.6 mAh/g at a 50C rate, corresponding to 173% of the capacity of the conventional specimen (32.2 mAh/g). The notable improvement in high rate capability obtained in this study, compared with the conventional route, was attributed to the higher density of the triple junction formed by the BT–LC–electrolyte interface.

    DOI： 10.7567/JJAP.55.10TB01

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  • Gastight, closed pore inclusive porous ceramics through a superplastically foaming method Reviewed

    Akira Kishimoto, Atsuki Tohji, Takashi Teranishi, Hidetaka Hayashi

    Ceramic for Environmental Systems   257   69 - 79   2016.5

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    DOI： 10.1002/9781119234463.ch7

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  • Electrical Conductivity of Ceria-based Oxide under 24 GHz Millimeter-wave Heating in Varying Thermal Environments Reviewed

    CHE ABDULLAH Salmie Suhana Binti, TERANISHI Takashi, HAYASHI Hidetaka, KISHIMOTO Akira

    Journal of the Japan Society of Powder and Powder Metallurgy   63 ( 7 )   663 - 667   2016.1

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    <p>Sm-doped CeO2 ceramics were prepared by conventional solid state method. The electrical conductivity of the samples was measured under conventional heating and 24 GHz millimeter-wave (MMW) heating, and the results were compared. During MMW heating, 5 mol% Sm-doped CeO2 pellets with different thickness were used as susceptors, meanwhile Al2O3 fiber board was used as thermal insulator and its design varies by the number of open channels. The aforementioned susceptors and thermal insulators dependency of conductivity values during MMW heating were studied. Conductivity of samples under MMW heating was found to be higher than under conventional heating. Results showed that the different susceptor thickness and thermal insulator design could result in different conductivity values. These results were attributed to the phenomenon of heat dissipation from surface and the amount of direct radiation reached the sample. Specific susceptor thickness and specific insulator design which leads to highest conductivity were identified. By combining these two effects, the largest enhancement of conductivity of ceria based ceramics was obtained.</p>

    DOI： 10.2497/jjspm.63.663

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  • Lithium ion conductivity of oriented Li0.33La0.56TiO3 solid electrolyte films prepared by a sol-gel process Reviewed

    Takashi Teranishi*,Yuki Ishii,Hidetaka Hayashi*,Akira Kishimoto*

    Solid State Ionics, Reactivity of Solids   284   1 - 6   2016.1

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    DOI： 10.1016/j.ssi.2015.11.029

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  • Influence of Millimeter-wave Irradiation on the Cation Interdiffusion of Ceria/Zirconia Ceramic Couple Reviewed

    Mikiya WAKIMOTO, Takashi TERANISHI, Hidetaka HAYASHI, Akira KISHIMOTO

    Journal of the Japan Society of Powder and Powder Metallurgy   63 ( 11 )   981 - 985   2016

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    DOI： 10.2497/jjspm.63.981

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  • In situ time-resolved dispersive X-ray absorption fine structure analysis of BaTiO<sub>3</sub>&ndash;LiCoO<sub>2</sub> composites for lithium ion batteries Reviewed

    Takashi TERANISHI, Yumi YOSHIKAWA, Ryota MIYAHARA, Hidetaka HAYASHI, Akira KISHIMOTO, Misaki KATAYAMA, Yasuhiro INADA

    Journal of the Ceramic Society of Japan   124 ( 6 )   659 - 663   2016

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    DOI： 10.2109/jcersj2.16009

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  • 21aAF-3 Effect of ion vacant on band structure in BaTiO_3

    Oshime N., Kano J., Ikeda N., Teranishi T., Osaki K., Fujii T., Ueda T., Ohkubo T.

    Meeting Abstracts of the Physical Society of Japan   71   2691 - 2691   2016

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    DOI： 10.11316/jpsgaiyo.71.1.0_2691

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  • Stabilisation dopant-dependent facilitation in ionic conductivity on millimeter-wave irradiation heating of zirconia-based ceramics Reviewed

    Akira Kishimoto, Hideki Hasunuma, Takashi Teranishi, Hidetaka Hayashi

    JOURNAL OF ALLOYS AND COMPOUNDS   648   740 - 744   2015.11

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    DOI： 10.1016/j.jallcom.2015.07.057

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  • High-Rate Capabilities of Ferroelectric BaTiO3?LiCoO2 Composites with Optimized BaTiO3 Loading for Li-Ion Batteries Reviewed

    T. Teranishi, Y. Yoshikawa, R. Sakuma, H. Okamura, H. Hashimoto, H. Hayashi, T. Fujii, A. Kishimoto, and Y. Takeda

    ECS Electrochemistry Letters   4   A137   2015.10

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  • In situ impedance analysis on BaTiO3-LiCoO2 composite cathodes for lithium ion batteries Reviewed

    Takashi Teranishi, Yumi Yoshikawa, Ryo Sakuma, Hirokazu Okamura, Hidetaka Hayashi, Akira Kishimoto, Yasuo Takeda

    JAPANESE JOURNAL OF APPLIED PHYSICS   54 ( 10 )   2015.10

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    DOI： 10.7567/JJAP.54.10NB02

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  • In situ impedance analysis on BaTiO3?LiCoO2 composite cathodes for lithium ion batteries Reviewed

    T. Teranishi, Y. Yoshikawa, R. Sakuma, H. Okamura, H. Hayashi, A. Kishimoto, and Y. Takeda

    Japanese Journal of Applied Physics   54   10NB02   2015.9

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  • Influence of PMSA-Based Polymer on the Settling Velocity of CNT in Aqueous Media Reviewed

    Nishimura Naoyuki, Takeda Shin-ichi, Teranishi Takashi, Hayashi Hidetaka, Saito Naoto, Kishimoto Akira

    Materials Transactions, JIM   63 ( 10 )   861 - 865   2015.9

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    The preparation of a stable suspension dispersing carbon nanotube (CNT) in aqueous media using polystyrene maleic acid (PSMA)-based polymer as surfactant was attempted to be subsequently used in the fabrication of high-performance ceramic matrix composites. Settling velocity under centrifugation analysis was experimentally evaluated as one of the stability criteria of the dispersion and pulsed nuclear magnetic resonance was used to evaluate the adsorbed molecules. The settling velocity decreased considerably with the PSMA concentration up to the saturation at around 7 mass%, then further decreased gradually with PSMA. The former was thought to be based on the dissociation of CNT agglomerate and the latter would be attributed to the surfactant-induced network structure formed in the aqueous media.

    DOI： 10.2320/matertrans.Y-M2015828

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  • Effect of 24 GHz microwave heating on creep deformation of yttria partially stabilised zirconia ceramics with titania and tin oxide additives Reviewed

    Akira Kishimoto, Kyohei Yamashita, Takashi Teranishi, Hidetaka Hayashi, Saburo Sano

    CERAMICS INTERNATIONAL   41 ( 4 )   5785 - 5789   2015.5

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    DOI： 10.1016/j.ceramint.2015.01.006

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  • Effect of 24GHz microwave heating on creep deformation of yttria partially stabilised zirconia ceramics with titania and tin oxide additives Reviewed

    A. Kishimoto, K. Yamashita, T. Teranishi, H. Hayashi and S. Sano

    Ceramics International   41   5785   2015.4

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  • Stabilisation dopant-dependent facilitation in ionic conductivity on millimetre-wave irradiation heating of zirconia-based ceramics Reviewed

    A. Kishimoto, H. Hasunuma, T. Teranishi and H. Hayashi

    Journal of Alloys and Compounds   648   740   2015.4

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  • Effect of Mg loading on the high-frequency tunability of Ba0.8Sr0.2TiO3 ceramics Reviewed

    T. Teranishi, T. Sogabe, H. Hayashi, A. Kishimoto, K. Iokibe, and Y. Toyota,

    Japanese Journal of Applied Physics   54   011502   2015.4

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  • High-Rate Capabilities of Ferroelectric BaTiO3-LiCoO2 Composites with Optimized BaTiO3 Loading for Li-Ion Batteries Reviewed

    Takashi Teranishi, Yumi Yoshikawa, Ryo Sakuma, Hirokazu Okamura, Hideki Hashimoto, Hidetaka Hayashi, Tatsuo Fujii, Akira Kishimoto, Yasuo Takeda

    ECS ELECTROCHEMISTRY LETTERS   4 ( 12 )   A137 - A140   2015

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    DOI： 10.1149/2.0041512eel

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  • 22pCH-13 Catalysis in metal-ferroelectric junctions

    Kano J., Ikeda N., Oshime N., Fujii T., Hashimoto H., Teranishi T., Ohkubo T., Ueda T., Yoshida T., Akiyama Y.

    Meeting Abstracts of the Physical Society of Japan   70   2743 - 2743   2015

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    DOI： 10.11316/jpsgaiyo.70.1.0_2743

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  • 21pCJ-7 Mg-doping effects in Ba_<0.8>Sr_<0.2>TiO_3

    Oshime N., Kano J., Osaki K., Teranishi T., Yoshida T., Ikeda N., Fujii T., Ohkubo T., Ueda T.

    Meeting Abstracts of the Physical Society of Japan   70   2704 - 2704   2015

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    DOI： 10.11316/jpsgaiyo.70.1.0_2704

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  • High-rate performance of ferroelectric BaTiO3-coated LiCoO2 for Li-ion batteries Reviewed

    T. Teranishi, Y. Yoshikawa, R. Sakuma, H. Hashimoto, H. Hayashi, A. Kishimoto, and T. Fujii

    Applied Physics Letters   105   143904   2014.10

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  • Dependence of the conductivity of polycrystalline Li0.33BaxLa0.56-2/3xTiO3 on Ba loading Reviewed

    Takashi Teranishi, Akane Kouchi, Hidetaka Hayashi, Akira Kishimoto

    SOLID STATE IONICS   263   33 - 38   2014.10

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    DOI： 10.1016/j.ssi.2014.05.001

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  • High-rate performance of ferroelectric BaTiO3-coated LiCoO2 for Li-ion batteries Reviewed

    Takashi Teranishi, Yumi Yoshikawa, Ryo Sakuma, Hideki Hashimoto, Hidetaka Hayashi, Akira Kishimoto, Tatsuo Fujii

    APPLIED PHYSICS LETTERS   105 ( 14 )   2014.10

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    DOI： 10.1063/1.4898006

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  • Dependence of the conductivity of polycrystalline Li0.33BaxLa0.56?2/3xTiO3 on Ba loading Reviewed

    T. Teranishi, A. Kouchi, H. Hayashi, and A. Kishimoto

    Solid State Ionics   263   33   2014.5

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  • The isothermal conductivity improvement in zirconia-based ceramics under 24 GHz microwave heating Reviewed

    A. Kishimoto, K. Ayano, T. Teranishi, and H. Hayashi

    The isothermal conductivity improvement in zirconia-based ceramics under 24 GHz microwave heating.   143   486 - 489   2014.4

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  • Relationship Between Phonon Parameters and Oxygen Ion Conductivity for Al?Yb Co-doped Zirconia Reviewed

    T. Teranishi, N. Matsubara, H. Hayashi, and A. Kishimoto

    Key Engineering Materials   582   107 - 110   2014.4

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  • The isothermal conductivity improvement in zirconia-based ceramics under 24 GHz microwave heating Reviewed

    Akira Kishimoto, Keiko Ayano, Takashi Teranishi, Hidetaka Hayashi

    MATERIALS CHEMISTRY AND PHYSICS   143 ( 2 )   486 - 489   2014.1

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    DOI： 10.1016/j.matchemphys.2013.10.002

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  • Relationship Between Phonon Parameters and Oxygen Ion Conductivity for Al-Yb Co-doped Zirconia Reviewed

    Takashi Teranishi, Nami Matsubara, Hidetaka Hayashi, Akira Kishimoto

    ELECTROCERAMICS IN JAPAN XVI   582   107 - 110   2014

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    DOI： 10.4028/www.scientific.net/KEM.582.107

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  • Maintaining the mechanical strength of La-, Y-co-substituted zirconia porous ceramics through the superplastically foaming method Reviewed

    Akira Kishimoto, Masanori Okada, Takashi Teranishi, Hidetaka Hayashi

    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING   581   98 - 103   2013.10

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    DOI： 10.1016/j.msea.2013.05.084

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  • Ferroelectric Domain Contribution to the Tunability of Ba08Sr02TiO3 Ceramics Reviewed

    Japanese Journal of Applied Physics   52   09KF06   2013.9

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  • Ferroelectric Domain Contribution to the Tunability of Ba0.8Sr0.2TiO3Ceramics

    Takashi Teranishi, Tsuyoshi Sogabe, Hidetaka Hayashi, Akira Kishimoto, Kazuhiro Fujimori

    Japanese Journal of Applied Physics   52 ( 9S1 )   09KF06 - 09KF06   2013.9

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    DOI： 10.7567/jjap.52.09kf06

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  • Thermoelectric efficiency of reduced SrTiO 3 ceramics modified with la and Nb Reviewed

    Takashi Teranishi, Yusuke Ishikawa, Hidetaka Hayashi, Akira Kishimoto, Misaki Katayama, Yasuhiro Inada

    Journal of the American Ceramic Society   96 ( 9 )   2852 - 2856   2013.9

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    DOI： 10.1111/jace.12379

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  • Lithium ion conductivity of Nd-doped (Li, La)TiO3 ceramics Reviewed

    Takashi Teranishi, Michihiro Yamamoto, Hidetaka Hayashi, Akira Kishimoto

    SOLID STATE IONICS   243   18 - 21   2013.7

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    DOI： 10.1016/j.ssi.2013.04.014

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  • Maintaining the mechanical strength of La-, Y- co-substituted zirconia porous ceramics through the superplastically foaming method Reviewed

    Materials Science and Engineering: A   581   98 - 103   2013.6

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  • Lithium ion conductivity of Nd-doped (Li, La)TiO3 ceramics Reviewed

    Solid State Ionics   243   18 - 21   2013.5

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  • Effect of millimeter-wave irradiation on cation interdiffusion in the calcium titanate/strontium titanate ceramic couple Reviewed

    Materials Chemistry and Physics   139   825 - 829   2013.5

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  • Thermoelectric Efficiency of Reduced SrTiO3 Ceramics Modified with La and Nb Reviewed

    Journal of the American Ceramics Society   96 ( 9 )   2852 - 2856   2013.5

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  • Effect of millimeter-wave irradiation on cation interdiffusion in the calcium titanate/strontium titanate ceramic couple Reviewed

    Akira Kishimoto, Yukari Kamakura, Takashi Teranishi, Hidetaka Hayashi

    MATERIALS CHEMISTRY AND PHYSICS   139 ( 2-3 )   825 - 829   2013.5

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    DOI： 10.1016/j.matchemphys.2013.02.038

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  • SUPERPLASTICALLY FOAMING METHOD FOR RELIABLE POROUS CERAMICS Reviewed

    Akira Kishimoto, Takahiro Nakagawa, Takashi Teranishi, Hidetaka Hayashi

    SUPERPLASTICITY IN ADVANCED MATERIALS   735   109 - 112   2013

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    DOI： 10.4028/www.scientific.net/MSF.735.109

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  • Microscopic Conduction Behavior Analysis on ZrO2-based Ion Conductors by Wideband Conductivity Measurement Reviewed

    Takashi Teranishi, Kosuke Shimizu, Hidetaka Hayashi, Akira Kishimoto

    ELECTROCERAMICS IN JAPAN XV   566   141 - 144   2013

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    DOI： 10.4028/www.scientific.net/KEM.566.141

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  • Superplastically Foaming Method for Reliable Porous Ceramics Reviewed

    Materials Science Forum   735   109 - 112   2012.12

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  • Fabrication of a Helical Tubular Pore in YSZ Ceramics by the Superplastically Foaming Method Reviewed

    OKADA Masanori, TERANISHI Takashi, HAYASHI Hidetaka, KISHIMOTO Akira

    J. Jpn. Soc. Powder Powder Metallurgy   59 ( 2 )   90 - 94   2012.2

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    We have already proposed and demonstrated novel ceramic foams named "superplastically foamed ceramics" utilizing the superplastic deformation. Since almost all the processes are carried out in solid phase, figure and the location of the foaming agent can be controllable, leading to desired patterning of closed pore in a fully densified ceramics. We have already demonstrated two-dimensional (2D) pore patterning through the superplastically foaming method. In the present study, we aim to fabricate helical tubular pore in zirconia based ceramics as a typical 3D patterned pore. As a foaming agent, SiC powders were used with a form of thin sheet based on methylcellulose aqueous solution followed by drying. A core cylindrical matrix compact was first fabricated using φ 10 steel die and the liner foaming agent was attached to make helical pattern. The patterned core matrix was placed in φ 14 or φ 15 steel die and pressed together with the filled matrix powder. The resultant powder compact was heat treated at 1600°C for 8h for sintering followed by foaming to give a ceramics with 3D tubular pore. Continuous upheaval reflecting the tubular pore was clearly observed on the side wall of the cylinder and helical tubular pore with different pitch can be fabricated.

    DOI： 10.2497/jjspm.59.90

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  • Thermoelectric Property of Polycrystalline Aluminum-Doped Zinc Oxide Enhanced by Micropore Foaming Reviewed

    Journal of the American Ceramic Society   95 ( 2 )   690 - 695   2012.2

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  • Thermoelectric Property of Polycrystalline Aluminum-Doped Zinc Oxide Enhanced by Micropore Foaming Reviewed

    Takashi Teranishi, Yosuke Mori, Hidetaka Hayashi, Akira Kishimoto

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   95 ( 2 )   690 - 695   2012.2

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    DOI： 10.1111/j.1551-2916.2011.04837.x

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  • Effect of Reducing Atmosphere on AIN Ceramics Sintered by Millimerter Wave-HIP Combined Sintering Reviewed

    YAMASHITA Kyohei, KOGO Yoshihisa, TERANISHI Takashi, HAYASHI Hidetaka, KISHIMOTO Akira

    J. Jpn. Soc. Powder Powder Metallurgy   59 ( 1 )   17 - 21   2012.1

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Powder and Powder Metallurgy  

    The effect of reducing atmosphere on yttria dispersed AlN ceramics sintered by millimeter wave-HIP combined sintering was investigated. The specimens were sintered by millimeter wave (MMW) heating under nitrogen reducing atmosphere containing 3 vol% hydrogen followed by post-HIP treatment at 1700°C for 0.5 h under nitrogen pressure of 190 MPa. The relative densities to the theoretical one saturated at the first MMW heating over 1700°C. Thermal conductivities of AlN ceramics sintered by MMW heating under heavily reduced atmosphere with nitrogen were higher than that through MMW heating under normally reduced atmosphere. The thermal conductivity increased with decreasing the yttria additive amount and with increasing the sintering temperature. The optimized yttria dispersion amount was 1 wt% in the MMW heating at 1800°C for 0.5 h. Relative density and thermal conductivity increased by post-HIP treatment. The optimized yttria dispersion amount shifted from 1 wt% to 3 wt% after post-HIP treatment.

    DOI： 10.2497/jjspm.59.17

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  • Quasi-millimeter-wave absorption behavior in Y/Yb-stabilized zirconia ceramics Reviewed

    Applied Physics Letters   100   242903   2012.1

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  • Exploring and Characterizing Novel Foaming Agents Based on Nitride in Superplastically Foaming Method Reviewed

    YAMAOKA Hiroshi, TERANISHI Takashi, HAYASHI Hidetaka, KISHIMOTO Akira

    64 ( 1 )   13 - 17   2012.1

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  • Broadband spectroscopy of the complex conductivity of polycrystalline yttria-stabilized zirconia Reviewed

    Takashi Teranishi, Hidetaka Hayashi, Akira Kishimoto, Takaaki Tsurumi

    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS   177 ( 1 )   69 - 73   2012.1

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    DOI： 10.1016/j.mseb.2011.09.039

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  • Complex Conductivity Using Wideband Spectroscopy for Yttria/Ytterbia-Stabilized Zirconia Ceramics Reviewed

    Takashi Teranishi, Kosuke Shimizu, Naoki Akiyama, Hidetaka Hayashi, Akira Kishimoto, Kazuhiro Fujimori

    JAPANESE JOURNAL OF APPLIED PHYSICS   51 ( 1 )   2012.1

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    DOI： 10.1143/JJAP.51.011102

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  • Complex Conductivity Using Wideband Spectroscopy for Yttria/Ytterbia-Stabilized Zirconia Ceramics Reviewed

    Japanese Journal of Applied Physics   51   011102   2011.12

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  • Broadband spectroscopy of the complex conductivity of polycrystalline yttria-stabilized zirconia Reviewed

    Materials Science and Engineering B   177   69 - 73   2011.10

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  • Effect of varying the ratio of matrix/dispersoid particle size on the piezoresistivity of alumina/carbon-black composite ceramics Reviewed

    Akira Kishimoto, Yuto Takagawa, Takashi Teranishi, Hidetaka Hayashi

    MATERIALS LETTERS   65 ( 14 )   2197 - 2200   2011.7

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    DOI： 10.1016/j.matlet.2011.04.042

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  • Effect of varying the ratio of matrix/dispersoid particle size on the piezoresistivity of alumina/carbon-black composite ceramics Reviewed

    Materials Letters   65   2197 - 2200   2011.4

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  • Size effect and domain-wall contribution of barium titanate ceramics Reviewed

    Takuya Hoshina, Yoichi Kigoshi, Saki Hatta, Takashi Teranishi, Hiroaki Takeda, Takaaki Tsurumi

    Ferroelectrics   402 ( 1 )   29 - 36   2010.11

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    DOI： 10.1080/00150191003697179

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  • Effects of oxygen vacancies and grain sizes on the dielectric response of BaTiO3 Reviewed

    Applied Physics Letters   97   212907-1 - 212907-3   2010.11

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  • Analysis of polarization behavior in relaxation of BaTiO<inf>3</inf>-based ferroelectrics using wideband dielectric spectroscopy Reviewed

    Takashi Teranishi, Takuya Hoshina, Hiroaki Takeda, Takaaki Tsurumi

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control   57 ( 10 )   2118 - 2126   2010.10

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    DOI： 10.1109/TUFFC.2010.1667

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  • Analysis on Dipole Polarization of BaTiO3-based Ferroelectric Ceramics by Raman Spectroscopy Reviewed

    Journal of the Ceramic Society of Japan   118   679 - 682   2010.8

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  • Analysis on dipole polarization of BaTiO3-based ferroelectric ceramics by Raman spectroscopy Reviewed

    Takashi Teranishi, Naohiro Horiuchi, Takuya Hoshina, Hiroaki Takeda, Takaaki Tsurumi

    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   118 ( 1380 )   679 - 682   2010.8

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    DOI： 10.2109/jcersj2.118.679

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  • Wide Band Dielectric Spectroscopy at Ferroelectric Phase Transition of BaTiO3 Ceramics Reviewed

    Japanese Journal of Applied Physics   49   041506-1 - 041506-4   2010.4

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  • Dielectric Properties of Barium Titanate Ceramics with Nano-Sized Domain Reviewed

    Yoichi Kigoshi, Saki Hatta, Takashi Teranishi, Takuya Hoshina, Hiroaki Takeda, Osamu Sakurai, Takaaki Tsururni

    Key Engineering Materials (ELECTROCERAMICS IN JAPAN XIII)   445   27 - 30   2010

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    DOI： 10.4028/www.scientific.net/KEM.445.27

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  • Wide Range Dielectric Spectroscopy of Barium Strontium Titanate Ceramics Reviewed

    Takashi Teranishi, Takuya Hoshina, Hiroaki Takeda, Takaaki Tsurumi

    Key Engineering Materials (ASIAN CERAMIC SCIENCE FOR ELECTRONICS III AND ELECTROCERAMICS IN JAPAN XII)   421-422   273 - 276   2010

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    DOI： 10.4028/www.scientific.net/KEM.421-422.273

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  • Wide Range Dielectric Spectroscopy on Perovskite Dielectrics Reviewed

    Materials Science and Engineering: B   161   55 - 60   2009.4

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  • Polarization Behavior in Diffuse Phase Transition of BaxSr1−xTiO3 Ceramics Reviewed

    Journal of Applied Phyics   105   054111-1 - 054111-5   2009.3

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  • Ultrawideband Dielectric Spectroscopy of BaZrxTi1−xO3 Ceramics and Its Microscopic Mechanism of Polarization Reviewed

    Journal of Applied Phyics   105   114102-1 - 14102-4   2009.1

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  • Ultra wide range dielectric spectroscopy of strontium titanate-strontium zirconate solid solution Reviewed

    Takaaki Tsurumi, Takashi Teranishi, Satoshi Wada, Hirofumi Kakemoto, Osamu Fukunaga, Masafumi Nakada, Jun Akedo

    Journal of the Ceramic Society of Japan   114 ( 1333 )   774 - 781   2006

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    DOI： 10.2109/jcersj.114.774

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  • Fabrication of oxide-based all solid-state batteries utilizing dielectric interface

    樋口拓実, 浜田果周, 寺西貴志, 安井伸太郎, 安原颯, 近藤真矢, 岸本昭

    日本セラミックス協会秋季シンポジウム講演予稿集(Web)   35th   2022

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  • Electrolyte Dependence on Solid Electrolyte Interface (SEI) Formation in BaTiO3 Supported Lithium Ion Thin Film Batteries: II

    七澤太梧, 安原颯, 寺西貴志, 伊藤あゆみ, 小林能直, 安井伸太郎

    日本セラミックス協会秋季シンポジウム講演予稿集(Web)   35th   2022

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  • Improving cell performance of electrolyte supported oxide-based all solid-state Li ion batteries

    浜田果周, 本林秀文, 樋口拓実, 寺西貴志, 安井伸太郎, 安原颯, 近藤真矢, 田崎雄三, 中村亨, 岸本昭

    日本セラミックス協会秋季シンポジウム講演予稿集(Web)   35th   2022

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  • Fast charge transfer via dielectrics in lithium ion battery interface.

    寺西貴志, 山中亮治, 近藤真矢, 岸本昭, 三村憲一, 加藤一実, 安原颯, 安井伸太郎

    日本セラミックス協会年会講演予稿集(Web)   2021   2021

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  • The effect of introducing triple-phase interfaces onto Li4Ti5O12 epitaxial thin films.

    安原颯, 安井伸太郎, 保科拓也, 鶴見敬章, 寺西貴志, 伊藤満

    日本セラミックス協会年会講演予稿集(Web)   2021   2021

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  • Model Study of Ferroelectric Material Assisted Interface having Ultra-fast Ionic Transport

    安井伸太郎, 寺西貴志

    村田学術振興財団年報   ( 35 )   2021

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  • Observation of SEI formed in a vicinity of a triple-phase interface

    安原颯, 安井伸太郎, 保科拓也, 鶴見敬章, 寺西貴志, 伊藤満

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)   33rd   2020

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  • 充放電サイクル後の「LiCoO2-BaTiO3-電解液」三相界面の観察

    安原颯, 吉川祐未, 寺西貴志, 坂田修身, 安井伸太郎, 谷山智康, 谷山智康, 伊藤満

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   66th   2019

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  • 酸化物ドットを担持したLiCoO2エピタキシャル薄膜の作製とその高速充放電特性のドット種依存性

    安原颯, 吉川祐未, 寺西貴志, 安井伸太郎, 谷山智康, 伊藤満

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   65th   2018

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  • 誘電体界面を利用した急速充放電型Liイオン電池の開発

    吉川祐未, 寺西貴志, 勝治直人, 岸本昭, 安原颯, 安井伸太郎, 伊藤満

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)   31st   2018

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  • 酸化物ドットを担持したLiCoO2エピタキシャル薄膜の作製とその高速充放電特性のドット種依存性

    安原颯, 吉川祐未, 寺西貴志, 安井伸太郎, 谷山智康, 谷山智康, 伊藤満

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   79th   2018

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  • 高速充放電Liイオン電池に向けた誘電体SEIの開発

    吉川祐未, 勝治直人, 安原颯, 安井伸太郎, 寺西貴志, 林秀考, 岸本昭, 伊藤満

    エレクトロセラミックス研究討論会講演予稿集   37th   2017

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  • 強誘電体-活物質ナノ積層正極膜の電池特性評価

    茶島圭介, 寺西貴志, 林秀考, 岸本昭, 安原颯, 安井伸太郎, 伊藤満

    セラミックス基礎科学討論会講演要旨集   55th   2017

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  • エピタキシャルBaTiO3/LiCoO2薄膜の界面状態と正極特性

    安原颯, 茶島圭介, 寺西貴志, 勝矢良雄, 坂田修身, 安井伸太郎, 谷山智康, 伊藤満

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   77th   2016

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  • BaTiO3-LiCoO2ナノ積層正極膜における高出力特性

    茶島圭介, 寺西貴志, 林秀考, 岸本昭, 安原颯, 安井伸太郎, 伊藤満

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)   29th   2016

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  • 強誘電体-活物質ナノ積層正極膜の電池特性評価

    茶島圭介, 寺西貴志, 林秀考, 岸本昭, 安原颯, 安井伸太郎, 伊藤満

    日本セラミックス協会年会講演予稿集(CD-ROM)   2016   2016

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  • BaTiO3/LiCoO2エピタキシャル薄膜の作製と正極特性の評価

    安原颯, 安井伸太郎, 寺西貴志, 伊藤満

    セラミックス基礎科学討論会講演要旨集   54th   2016

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  • Wide Band Dielectric Spectroscopy at Ferroelectric Phase Transition of BaTiO3 Ceramics

    Takashi Teranishi, Takuya Hoshina, Hiroaki Takeda, Takaaki Tsurumi

    Jpn. J. Appl. Phys.   49   041506 (4 pages)   2010

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  • Ultrawideband dielectric spectroscopy of BaZrxTi1-xO3 ceramics and its microscopic mechanism of polarization

    Takashi Teranishi, Takuya Hoshina, Hiroaki Takeda, Takaaki Tsurumi

    JOURNAL OF APPLIED PHYSICS   105 ( 11 )   114102   2009.6

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  • Wide range dielectric spectroscopy on perovskite dielectrics Reviewed

    Takashi Teranishi, Takuya Hoshina, Takaaki Tsurumi

    Materials Science and Engineering: B   161 ( 1-3 )   55 - 60   2009.4

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  • Polarization behavior in diffuse phase transition of BaxSr1-xTiO3 ceramics

    Takashi Teranishi, Takuya Hoshina, Hiroaki Takeda, Takaaki Tsurumi

    JOURNAL OF APPLIED PHYSICS   105 ( 5 )   054111   2009.3

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Industrial property rights

  • 電極及び電極の製造方法

    寺西 貴志, 岸本 昭, 布施 裕大, 平松 健矢, 山田 博俊

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    Applicant：国立大学法人 岡山大学

    Application no：特願2019-199388  Date applied：2019.10.31

    Announcement no：特開2021-072232  Date announced：2021.5.6

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  • リチウムイオン電池の正極材料の製造方法及びリチウムイオン電池の製造方法

    依田 孝次, 寺西 貴志

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    Applicant：株式会社豊島製作所

    Application no：特願2019-195657  Date applied：2019.10.28

    Announcement no：特開2021-068683  Date announced：2021.4.30

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  • 電気熱量材料の特性評価装置、その方法、及びそのプログラム

    井口 亮, 内田 健一, 狩野 旬, 寺西 貴志

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    Applicant：国立研究開発法人物質・材料研究機構

    Application no：特願2019-136550  Date applied：2019.7.25

    Announcement no：特開2021-021578  Date announced：2021.2.18

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  • リチウムイオン二次電池用正極材料

    堀川 大介, 山本 雄治, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2019-123080  Date applied：2019.7.1

    Announcement no：特開2021-009801  Date announced：2021.1.28

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  • 二次電池用電極材料

    山本 雄治, 三村 憲一, 加藤 一実, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2019-109646  Date applied：2019.6.12

    Announcement no：特開2020-202124  Date announced：2020.12.17

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  • 二次電池の正極材料、およびこれを用いた二次電池

    堀川 大介, 山本 雄治, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2019-106059  Date applied：2019.6.6

    Announcement no：特開2020-202022  Date announced：2020.12.17

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  • 二次電池の正極、およびこれを用いた二次電池

    堀川 大介, 山本 雄治, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2019-106060  Date applied：2019.6.6

    Announcement no：特開2020-202023  Date announced：2020.12.17

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  • リチウム二次電池の正極材料、およびこれを用いたリチウム二次電池

    堀川 大介, 山本 雄治, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2019-106058  Date applied：2019.6.6

    Announcement no：特開2020-202021  Date announced：2020.12.17

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  • 正極材料とこれを用いた二次電池

    堀川 大介, 杉浦 隆太, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2018-200563  Date applied：2018.10.25

    Announcement no：特開2020-068135  Date announced：2020.4.30

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  • キャパシタ、キャパシタ用固体電解質粒子の製造方法、及び、キャパシタの製造方法

    清水 正義, 畠 宏太郎, 寺西 貴志

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    Applicant：サムソン エレクトロ-メカニックス カンパニーリミテッド.

    Application no：特願2018-144604  Date applied：2018.7.31

    Announcement no：特開2020-021826  Date announced：2020.2.6

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  • 電極評価装置、電極評価方法及び電池キット

    紀和 利彦, 寺西 貴志

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    Applicant：国立大学法人 岡山大学

    Application no：特願2018-138037  Date applied：2018.7.23

    Announcement no：特開2020-016479  Date announced：2020.1.30

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  • 正極材料とこれを用いたリチウム二次電池

    堀川 大介, 杉浦 隆太, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2017-237310  Date applied：2017.12.12

    Announcement no：特開2019-106276  Date announced：2019.6.27

    Patent/Registration no：特許第6919994号  Date registered：2021.7.28 

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  • 正極材料とこれを用いたリチウム二次電池

    堀川 大介, 杉浦 隆太, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2017-237310  Date applied：2017.12.12

    Announcement no：特開2019-106276  Date announced：2019.6.27

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  • 正極材料とこれを用いたリチウム二次電池

    堀川 大介, 杉浦 隆太, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2017-237311  Date applied：2017.12.12

    Announcement no：特開2019-106277  Date announced：2019.6.27

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  • 強誘電体炭素複合材料及びその製造方法

    寺西 貴志, 岸本 昭, 福井 昂佑

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    Applicant：国立大学法人 岡山大学

    Application no：特願2017-123010  Date applied：2017.6.23

    Announcement no：特開2019-009252  Date announced：2019.1.17

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  • リチウムイオン二次電池用正極材料

    堀川 大介, 杉浦 隆太, 寺西 貴志

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    Applicant：トヨタ自動車株式会社

    Application no：特願2017-079861  Date applied：2017.4.13

    Announcement no：特開2018-181614  Date announced：2018.11.15

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  • リチウムイオン電池の正極材料の製造方法及びこの方法で製造した電極材料

    寺西 貴志, 岸本 昭, 吉川 祐未

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    Applicant：国立大学法人 岡山大学

    Application no：特願2015-025824  Date applied：2015.2.12

    Announcement no：特開2016-149270  Date announced：2016.8.18

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  • リチウムイオン電池の正極材料の製造方法及びこの方法で製造した電極材料

    寺西 貴志, 岸本 昭, 吉川 祐未

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    Applicant：国立大学法人 岡山大学

    Application no：特願2015-025824  Date applied：2015.2.12

    Announcement no：特開2016-149270  Date announced：2016.8.18

    Patent/Registration no：特許第6551878号  Date registered：2019.7.12 

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Research Projects

  • 非平衡電磁波焼結による酸化物全固体電池の精密界面制御

    Grant number：24K01162  2024.04 - 2027.03

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    寺西 貴志, 近藤 真矢, 岸本 昭

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    Grant amount：\18460000 （ Direct expense: \14200000 、 Indirect expense：\4260000 ）

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  • Creation of rapid start-up and high-efficiency high-temperature electrochemical device using millimeter-wave irradiation

    Grant number：21H01623  2021.04 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    岸本 昭, 須田 聖一, 寺西 貴志, 近藤 真矢

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    Grant amount：\17160000 （ Direct expense: \13200000 、 Indirect expense：\3960000 ）

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  • Rapid and high efficiency operation of high temperature elelctrochemical devices assisted by millimeter-wave irradiation

    Grant number：23K21039  2021.04 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    岸本 昭, 須田 聖一, 寺西 貴志, 近藤 真矢

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    Grant amount：\17160000 （ Direct expense: \13200000 、 Indirect expense：\3960000 ）

    蛍石蛍石型およびペロブスカイト型酸化物セラミックスのイオン伝導度を、ミリ波照射加熱時と通常の電気炉加熱時で比較したところ、同じ温度でも前者の導電率が高いことを見出した。このイオン伝導促進により、これまでの作動温度で運転した場合、オーム損失の少ない固体電解質からなるデバイスを構成できる可能性が示された。また、電解質部の導電率を保ったまま作動温度を低下させることも可能であり、電解質のみの選択加熱効果を考慮すれば、電解質以外の構成部品を更に低温に保つことができる。
    本研究は、高温で動作する電気化学デバイスの加熱方式をミリ波照射に変更することにより、選択加熱効果および導電率向上による加熱エネルギーおよびオーム損失の低減を図り、エネルギー効率向上の可能性を探ることを目的としている。高温電気化学デバイスとしてまず、ミリ波照射下で動作する高温酸化物形燃料電池（SOFC）を作製した。電解質にはこれまでに最適化されたジルコニア系酸化物イオン伝導体を用い、アノード（水素極）にはNi-YSZ系サーメット、カソードとしてはLa0.8Sr0.2MnO3（LSM）をそれぞれ用いる。昇温したときの電流－電圧特性から燃料電池の発電効率を評価した。このときの昇温を通常の電気炉およびミリ波照射加熱で行い、発電効率を比較した。
    発電効率の向上が認められる系について電気化学評価を行った。具体的には電気化学的インピーダンス（EIS）測定を行い、全抵抗から界面抵抗（アノード、カソード）を分離したミリ波加熱方式のSOFCのトータルの性能として、選択加熱による効率の向上やミリ波の発振効率も含めトータルのエネルギー効率を評価した。
    SOFCセルの水素極側に水蒸気を導き、電気分解により水素を製造した。この時の通電量と水素製造量の関係を通常電気炉とミリ波昇温で比較し、水素製造効率の評価を行った。

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  • 界面ポテンシャル制御による高性能酸化物系全固体電池の実現

    Grant number：21H01625  2021.04 - 2024.03

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    寺西 貴志, 中山 将伸, 三村 憲一, 近藤 真矢, 岸本 昭

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    Grant amount：\17420000 （ Direct expense: \13400000 、 Indirect expense：\4020000 ）

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  • 熱イメージングを用いた誘電体における熱電現象・電場誘起熱応答の開拓

    Grant number：20H02609  2020.04 - 2023.03

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    井口 亮, 寺西 貴志, 狩野 旬, 内田 健一

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    Grant amount：\18200000 （ Direct expense: \14000000 、 Indirect expense：\4200000 ）

    本研究は、誘電体において電場が誘起する熱現象を詳らかにし、誘電体の熱制御の方法や熱応答の理解の刷新を狙うものである。本年度は、サーモグラフィ法を用いて誘電体における縦熱電効果(電場と熱流方向が平行)の温度依存性および物質依存性の計測、そしてその定量化を目指した取り組みを行った。特に、交流サーモグラフィ計測における定量性の確保のため、評価・実験面での取り組みに力を入れた。実験結果の議論を行うためには、交流熱応答から適切な物理量を定量的に抽出する必要があり、既知の電気熱量効果をモデルとして評価法の構築に取り組んだ。熱リークや電気熱量効果そのものの周波数依存性を取り入れた評価法を検討した結果、赤外線カメラ自体の応答の補正も組み入れる必要性が分かった。これに対応した交流サーモグラフィ計測評価法を完成させ、電気熱量効果を対象として論文として公表する準備を進めた。実験面では、誘電体試料の電極および配線の間の接触状態によって、対象とする効果の温度変化量が変わる懸念があり、サーモグラフィ計測および高電圧印加と両立するプロービングシステムを設計し、準備を進めた。また、計画していた異種誘電体接合系における実験も進めた。電気的特性および機械的特性は問題なく、今後詳細な熱測定と解析を進める予定である。加えて、新たに物質依存性測定の一環として開始した単結晶試料を用いた実験においても進展があった。その熱信号は非自明な空間分布を有しており、縦熱電効果において誘電秩序の果たす想定外の役割がある可能性がある。これを明らかにすべく、可視光用の測定系をサーモグラフィと組み合わせた赤外-可視同時計測にも取り組んだ。

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  • Development of all solid state Li ion battery with ultra high power density via incorporating dielectric nano interface

    Grant number：18H01707  2018.04 - 2021.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Teranishi Takashi

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    Grant amount：\17290000 （ Direct expense: \13300000 、 Indirect expense：\3990000 ）

    We report fast charge transfer along the Li-ion pathway via incorporating an adequate dielectric layer at the electrolyte－electrode interface for the liquid electrolyte based lithium ion batteries (Conv. LIB). The dielectric interface was applied to the all solid state lithium ion batteries (ASS LIB). First, the fast Li transfer route and the involved elementary reactions at the interface were determined in the Conv. LIB. The dielectric interface was then utilized to the quasi-ASS LIB as well as sulfide based ASS LIB. The contribution of dielectric layer to ASS LIB interface was consequently interpreted by the experimental results obtained in Conv. LIB.

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  • Selective enhancement of mass transport under millimeter-wave irradiation and its application of material fabrication

    Grant number：16H04497  2016.04 - 2019.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Kishimoto Akira

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    Grant amount：\18070000 （ Direct expense: \13900000 、 Indirect expense：\4170000 ）

    The degree of enhancement of interdiffusion in the ceria-zirconia system increased as the Ce ion concentration increased, and showed a larger value under millimeter wave irradiation at any concentration. It is considered that this is because ceria absorbs millimeter waves more than zirconia, and thus the the driving force of diffusion depends on Ce ion concentration. Both the electric furnace and millimeter wave diffusion improved the Vickers hardness of the titania through the mutual diffusion contacted with tin oxide, but the flexural strength improved only by the millimeter wave diffusion annealing. It was possible to perform low temperature sintering by millimeter wave heating to ceria and zirconia with small substitution amount, which suggested cation migration promotion. It was also possible to suppress grain growth and bending deformation, suggesting related cation migration suppression

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  • Development of ultrahigh rate lithium ion battery via polarization assist incorporation into electrodes

    Grant number：16K14094  2016.04 - 2018.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    Teranishi Takashi

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    Grant amount：\3770000 （ Direct expense: \2900000 、 Indirect expense：\870000 ）

    There is huge demand for lithium ion battery with ultrahigh rate capability. We aim to simultaneously incorporate polarization assist architecture into both cathode and anode electrodes, in attempt to activate interfacial charge transfer. LiCoO2 modified with BaTiO3 is utilized as cathode, while the graphene oxides, rGO, and nitridized rGO are employed for anode active material for assembling full cells. In fact, modified electrodes exhibit significantly greater power density; discharge capacity of modified sample at 5th cycle at 10C rate is ca. 15 times as high as conventional electrodes, i.e., bare LCO/Graphite. The result implies the polarization assist architecture incorporated into both cathodes and anodes effectively improves the power density of lithium ion batteries.

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  • Development of ferroelectric-active materials nano-composites for cathode materials of high-rate Li ion batteries

    Grant number：15H04126  2015.04 - 2018.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Teranishi Takashi

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    Grant amount：\17030000 （ Direct expense: \13100000 、 Indirect expense：\3930000 ）

    On-board vehicle applications dictate the need for drastically improved power densities of Lithium ion batteries. We proposed composite cathodes with loading of ferroelectrics as an artificial interfacial layer, in attempt to promote Li diffusion at active materials-electrolyte interface. In fact, we succeeded to drastically improve the high rate capability of LiCoO2 by loading of small amount of ferroelectric BaTiO3. A series of experimental results (e.g., impedance analysis and thin film battery) implied that ferroelectrics-active material-electrolyte triple-phase junction where the electric field is intensified acts as an active Li pathway and the triple junction density is a dominant parameter determining power density.

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  • Investigation of the improvement of ionic conductivity under millimeter-wave irradiation and its application for solid oxide fuel cell

    Grant number：26630318  2014.04 - 2016.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    Kishimoto Akira, HAYASHI Hidetaka, TERANISHI Takashi

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    Grant amount：\3900000 （ Direct expense: \3000000 、 Indirect expense：\900000 ）

    With the aim to apply the solid oxide fuel cell, the electrical conductivity of the samples was measured under conventional heating and 24 GHz millimeter-wave (MMW) heating, and the results were compared on zirconia an ceria based ceramics. Conductivity of samples under MMW heating was found to be higher than under conventional heating. Results showed that the different susceptor thickness and thermal insulator design could result in different conductivity values. These results were attributed to the phenomenon of heat dissipation from surface and the amount of direct radiation reached the sample. Specific susceptor thickness and specific insulator design which leads to highest conductivity were identified. By combining these two effects, the largest enhancement of conductivity of zirconia and ceria based ceramics was obtained with enhancement as large as over ten times.

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  • Innovation and improvement of novel functional ceramics utilizing the superplastically foaming method

    Grant number：25289229  2013.04 - 2016.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Kishimoto Akira, HAYASHI Hidetaka, TERANISHI Takashi

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    Grant amount：\18720000 （ Direct expense: \14400000 、 Indirect expense：\4320000 ）

    Aiming for an application to the high temperature pressure sensor, semiconductive ceramics foam incorporated with a narrow slit has been fabricated by the superplastically foaming method. We investigated the pressure dependence of resistance on the zinc oxide based foaming body, by changing the fabrication process and composition. The resistance of the sample decreased with an increase in pressure both at room and high temperatures. The performance of this type of sensor has been improved by doping ambivalent atoms (Ag and Li) into the matrix.

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  • Development of lithium ion conductors-dielectrics nano composite materials for the capacitors with large capability

    Grant number：25820332  2013.04 - 2015.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    TERANISHI Takashi

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    Grant amount：\4420000 （ Direct expense: \3400000 、 Indirect expense：\1020000 ）

    Composite materials consisting of a fast lithium ion conductor and a dielectric oxide were synthesized for the fundamental material applied to the capacitor with large capability. Firstly, the modification of the ionic radii of A site cations in perovskite structure effectively enhanced the lithium ion conductivity. Secondary, the 2- and 3-dementional composite materials consisting of lithium ion conductor and dielectrics were fabricated and evaluated. The expected large polarization with low dielectric loss wasn’t however obtained until now.

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  • Phonon Analysis on Ion Conductive Oxides Using Broadband Conductivity Spectroscopy

    Grant number：23750242  2011 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    TERANISHI Takashi

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    Grant amount：\4420000 （ Direct expense: \3400000 、 Indirect expense：\1020000 ）

    The evaluation technique that provides a broadband conductivity spectra from low to THz frequencies for oxygen ion conductor ceramics was developed in this study. The relationship between the optical phonon behavior and the ion conductivity was quantitatively investigated by applying this technique to some oxygen ion conductors(ex. yttria-stabilized zirconia). As a result, the existence of the relation between these parameters; smaller damping factor of the optical vibration leads to higher ion conductivity, was found.

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  • チタン酸バリウムストロンチウムにおける高周波誘電特性の発現メカニズムの解明

    Grant number：09J08561  2009 - 2010

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    寺西 貴志

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    Grant amount：\1400000 （ Direct expense: \1400000 ）

    H21年度までにおいて,通常の強誘電体であるBaTiO3(BT),リラクサー強誘電体であるBaZr0.25Ti0.7503(BZT-0.25),散漫相転移型強誘電体であるBST-0.6について,新規に開発した広帯域誘電分散測定法を用いて,kHz～THzまでの広帯域複素誘電率を測定し,双極子分極、イオン分極、電子分極由来の誘電率を同時に定量化した.結果,通常の強誘電体である,BTにおいてキュリー温度(相転移温度)以上の本来常誘電領域で,双極子分極がBZT-0.25やBST0.6と同様な挙動を示すことがわかった.本年度は,より詳細にBTにおける双極子分極の挙動を解析するため,キュリー温度付近でラマン分光測定を行った.さらに測定したラマン強度を,フォノン相互作用長(Lphonon)を用いたラマン強度の理論式で最小二乗フィッティングし,Lphononの温度変化を調べた.結果,Lphononはキュリー点以上においても0とはならず,正の値を持つことが分かった.Lphononの大きさは,双極子のクラスターサイズを反映していることから,BTの常誘電相においてナノサイズ分極領域(Polar nanoregions,PNRs)が存在していることを示唆する結果となった.この結果は,前年度までに得られた広帯域誘電率測定の結果をサポートするものであり,強誘電体BTにおける常誘電相での双極子分極の起源に大きく迫ることができたといえる.

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  • Material Process Experiment 2 （2022academic year） 1st semester  - 月5～8,木5～8

  • Inorganic Chemistry 2 （2022academic year） Second semester  - 月1～2,木3～4

  • Seminar in Solid State Chemistry （2022academic year） Year-round  - その他

  • Energy Materials （2021academic year） Prophase  - 金3,金4

  • Energy Materials Chemistry （2021academic year） Prophase  - その他

  • Basic Chemistry （2021academic year） Second semester  - 火3,火4,金1,金2

  • Basic Chemistry （2021academic year） Second semester  - 火3～4,金1～2

  • Basic Chemistry （2021academic year） Second semester  - 火3,火4,金1,金2

  • Internship in Applied Chemistry （2021academic year） Prophase  - その他

  • Seminar on Applied Chemistry 1 （2021academic year） Prophase  - その他

  • Seminar on Applied Chemistry 2 （2021academic year） Late  - その他

  • Research Works for Master Thesis on Applied Chemistry （2021academic year） Year-round  - その他

  • Material Process Experiment 2 （2021academic year） 1st semester  - 月5,月6,月7,月8,木5,木6,木7,木8

  • Material Process Experiment 2 （2021academic year） 1st semester  - 月5,月6,月7,月8,木5,木6,木7,木8

  • Seminar in Solid State Chemistry （2021academic year） Year-round  - その他

  • Physical Chemistry 3 （2021academic year） Fourth semester  - 水3,水4,金5,金6

  • Energy Materials （2021academic year） Prophase  - その他

  • Energy Materials （2020academic year） Prophase  - 金3,金4

  • Energy Materials Chemistry （2020academic year） Prophase  - その他

  • Basic Chemistry （2020academic year） Second semester  - 水1,水2,金1,金2

  • Basic Chemistry （2020academic year） Second semester  - 水1,水2,金1,金2

  • Internship in Applied Chemistry （2020academic year） Prophase  - その他

  • Seminar on Applied Chemistry 1 （2020academic year） Prophase  - その他

  • Seminar on Applied Chemistry 2 （2020academic year） Late  - その他

  • Research Works for Master Thesis on Applied Chemistry （2020academic year） Year-round  - その他

  • Material Process Experiment 2 （2020academic year） 1st semester  - 月4,月5,月6,月7,木4,木5,木6,木7

  • Material Process Experiment 2 （2020academic year） 1st semester  - 月4,月5,月6,月7,木4,木5,木6,木7

  • Seminar in Solid State Chemistry （2020academic year） Year-round  - その他

  • Physical Chemistry 3 （2020academic year） Fourth semester  - 水3,水4,金5,金6

  • Energy Materials （2020academic year） Prophase

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