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Development of fast ionic conductiors by using controlled hydrogen content

Research Project

Project/Area Number 21K04700
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26040:Structural materials and functional materials-related
Research InstitutionKwansei Gakuin University

Principal Investigator

Matsuo Motoaki  関西学院大学, 工学部, 准教授 (20509038)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords水素化物 / イオン伝導体 / 二次電池 / イオン伝導 / 固体電解質 / 水素
Outline of Research at the Start

リチウムイオン二次電池を代表とする蓄電池の更なるエネルギー密度/出力密度向上のために、従来の有機溶媒系電解液に替わり得る電気化学的安定性に優れた非溶媒系固体電解質(イオン伝導体)の開発が強く望まれている。本研究では、リチウム/ナトリウム超イオン伝導機能を有するクロソ系錯体水素化物(Na2B12H12などの固体試料)に対して、含有する水素密度を最適化することにより、イオン伝導特性の改善に取り組む。

Outline of Final Research Achievements

Hydro-closo-borates, M2BnHn (M = Li, Na) composed of the [BnHn]2- closo-borate anions, exhibit superionic conductivities on the order of 0.1 S/cm after the order-disorder transitions. From the application point of view, it is highly desirable to enhance the conductivities at room temperature. In this study, we have found out that partial dihydrogen desorption and combining [BnHn]2- with [NH2]- are effective in modifying the conductivities of M2BnHn.

Academic Significance and Societal Importance of the Research Achievements

クロソ系錯体水素化物の相転移温度以下でのイオン伝導率を改善するという目標を達成することができた。その中でも部分脱水素化量制御によるアプローチは、水素化物特有のものであり、国内外の他のグループに先行して本研究で初めて着眼した材料設計指針である。今後錯体水素化物での高速イオン伝導機能を飛躍的に発展させ高エネルギー密度の全固体二次電池の実現を後押するとともに、“水素化物でのイオニクス”分野の学理探求に貢献する成果と言える。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2023 2022

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Enhancement of Activation and Hydrogen Storage Kinetics of TiFe(Mn) Using High-Pressure Sliding (HPS) Process2023

    • Author(s)
      Z. Horita, Y. Tang, M. Matsuo, K. Edalati, M. Yumoto, Y. Takizawa
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 64 Issue: 8 Pages: 1920-1923

    • DOI

      10.2320/matertrans.MT-MF2022059

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2023-08-01
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Hydride Electrolytes for All-Solid-State Batteries2023

    • Author(s)
      M. Kawabata, K. Nishimoto, S. Imato, M. Matsuo
    • Organizer
      7th International Symposium on Fuel and Energy
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] クロソ系錯体水素化物を用いた固体電解質の作製2023

    • Author(s)
      川端真希花、松田修、西本健汰、松尾元彰
    • Organizer
      日本金属学会2023年秋期講演大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] クロソボラン錯体水素化物でのナトリウムイオン伝導特性の改善2023

    • Author(s)
      今任秀有、森春貴、安田響、松尾元彰
    • Organizer
      日本金属学会2023年春期(第172回)講演大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Complex Hydride Electrolytes for All-Solid-State Batteries2022

    • Author(s)
      Shuyu Imato, Haruki Mori, Hibiki Yasuda, Makika Kawabata, Motoaki Matsuo
    • Organizer
      Young Generation Symposium
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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