Rchr
J-GLOBAL ID：200901004408597521   Update date: Apr. 08, 2024

Kuwata Naoaki

クワタ ナオアキ | Kuwata Naoaki
Affiliation and department：
National Institute for Materials Science Center for Green Research on Energy and Environmental Materials, Solid-State Battery Ionics Group

About National Institute for Materials Science Center for Green Research on Energy and Environmental Materials, Solid-State Battery Ionics Group


Job title： Group Leader
Other affiliations (1)：
  • Hokkaido University  Graduate School of Chemical Sciences and Engineering   Guest Professor
Homepage URL  (1)： https://scholar.google.com/citations?user=9LrAu94AAAAJ&hl=ja
Research field  (1)： Inorganic materials
Research keywords  (6)： Solid state ionics ,  All-solid-state lithium battery ,  Diffusion coefficient ,  TOF-SIMS ,  NMR ,  Thin-film battery
Research theme for competitive and other funds  (9)：
  • 2021 - 2024 Study on diffusion mechanism of all-solid-state battery materials by using isotope exchange SIMS analysis and application to operando measurements
  • 2019 - 2024 Integrated Studies on Interface Ionics by Advanced Analytical Techniques
  • 2017 - 2020 Study of diffusion mechanism in lithium-ion battery materials by SIMS with isotope ion-exchange method
  • 2015 - 2018 Development of methods for lithium self-diffusion coefficient measurements in mixed conductors using isotope exchange
  • 2012 - 2015 Separation of ionic and electronic conductivity using all-solid-state thin-film battery techniques
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Papers (143)：
  • Gen Hasegawa, Naoaki Kuwata, Tsuyoshi Ohnishi, Kazunori Takada. Visualization and evaluation of lithium diffusion at grain boundaries in Li0.29La0.57TiO3 solid electrolytes using secondary ion mass spectrometry. Journal of Materials Chemistry A. 2024. 12. 2. 731-738
  • Naoki Yoshida, Naoaki Kuwata, Gen Hasegawa, Kazunori Takada. Liquid phase penetration sintering of garnet-type solid electrolyte LLZTO. Solid State Ionics. 2023. 403. 116408-116408
  • Masahito Ikeda, Randy Jalem, Gen Hasegawa, Naoaki Kuwata, Qiumin Liu, Takafumi Yamamoto, Kei Shigematsu, Yoshitaka Tateyama, Masaki Azuma. Theoretical Prediction and High-Pressure Synthesis of New LISICON-Type Solid-State Electrolyte Li2.75[B0.625P0.125S0.25]O3.375. The Journal of Physical Chemistry C. 2023
  • Gen HASEGAWA, Naoaki KUWATA. Lithium Diffusion Analysis in All-Solid-State Battery Materials. Denki Kagaku. 2022. 90. 4. 346-350
  • Kota Motohashi, Yosuke Matsukawa, Takashi Nakamura, Yuta Kimura, Naoaki Kuwata, Yoshiharu Uchimoto, Koji Amezawa. Fast fluoride ion conduction of NH4(Mg1-xLix)F3-x and (NH4)2(Mg1-xLix)F4-x assisted by molecular cations. Scientific Reports. 2022. 12. 1
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MISC (83)：
  • 桑田直明, 長谷川源, 端健二郎, 田中喜典, 高田和典. Li ion diffusion in perovskite-type solid electrolyte Li0.29La0.57TiO3 measured by pulsed-field gradient NMR. 電池討論会PDF要旨集(CD-ROM). 2022. 63rd
  • 桑田直明, 長谷川源, 藤原靖幸, 射場英紀, 射場英紀. Diffusion Coefficient of Solid Electrolyte Lithium Lanthanum Niobate Single Crystals Measured by PFG-NMR. 固体イオニクス討論会講演要旨集. 2022. 48th
  • 長谷川佑介, 桑田直明, 長谷川源, 松井広志. Protonic states of the precursory phenomenon in K3H(SO4)2. 固体イオニクス討論会講演要旨集. 2022. 48th
  • 長谷川源, 桑田直明. Visualization and quantitative evaluation of grain boundary diffusion in Li0.29La0.57TiO3 solid electrolytes using Secondary Ion Mass Spectrometry. 固体イオニクス討論会講演要旨集. 2022. 48th
  • 長谷川源, 長谷川源, 桑田直明, 河村純一. Temperature dependence of Li self-diffusion parallel to the ab-plane in single crystal LixCoO2. 日本物理学会講演概要集(CD-ROM). 2020. 75. 2
ｍore...
Books (4)：
  • 高性能リチウムイオン電池開発最前線 5V級正極材料開発の現状と高エネルギー密度化への挑戦
    エヌ・ティー・エス 2013
  • 全固体リチウムイオン二次電池の開発と製造技術
    サイエンス&テクノロジー 2012
  • Frontiers of Research on All-Solid-State Batteries
    シーエムシー出版 2011
  • Ionic motion in organic-inorganic hybrid materials." Protonics in Plastic Materials
    Transworld Research Network 2007
Education (1)：
  • - 2000 Hokkaido University Graduate School of Science Department of Chemistry
Professional career (1)：
  • Ph. D. (Hokkaido University)
Work history (11)：
  • 2024/04 - 現在 National Institute for Materials Science Center for Green Research on Energy and Environmental Materials Group Leader
  • 2021/04 - 現在 Hokkaido University Graduate School of Chemical Sciences and Engineering Guest Professor
  • 2019/04 - 2024/03 National Institute for Materials Science Center for Green Research on Energy and Environmental Materials Principal Researcher
  • 2019/09 - 2022/03 Kyoto University
  • 2015/06 - 2019/03 Tohoku University Institute of Multidisciplinary Research for Advanced Materials Associate Professor
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