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Development of divalent calcium ion conducting solid electrolytes

Research Project

Project/Area Number 16K05936
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Inorganic industrial materials
Research InstitutionOsaka University

Principal Investigator

Tamura Shinji  大阪大学, 工学研究科, 准教授 (80379122)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords固体電解質 / ナシコン型構造 / カルシウムイオン / 2価イオン伝導体
Outline of Final Research Achievements

In this research, I have synthesized the divalent Ca2+ cation conducing solid electrolytes showing high conducting property even in rigid crystal lattice for the purpose of developing the practically applicable divalent cation conducting solids for the next generation batteries. By selecting both the NASICON-type crystal structure having a well-ordered three-dimensional ion conducting pathway and the constituent cations whose valencies are +4 or +5, two kinds of Ca2+ ion conductors, (CaxHf1-x)4/4-2xNb(PO4)3 and Ca(1-x)/2Zr2-xNbx(PO4)3, showing extraordinary high were successfully obtained.
In addition, I have developed a Ni2+ cation conducting solid with NASICON-type structure, and revealed that (NixHf1-x)4/4-2xNb(PO4)3 solids also exhibited high divalent Ni2+ ion conductivity.

Academic Significance and Societal Importance of the Research Achievements

これまで電池材料などとして利用可能な高いイオン伝導性を示すCa2+イオン伝導体は開発されていなかった。本研究では実用領域のイオン伝導性には達していないが、従来の材料と比較すると1000倍以上高いCa2+イオン伝導性が実現できたことから、本研究成果は今後の同分野の材料開発に大いに貢献できる成果である。
また、本研究成果を通して実用的な2価カチオン伝導性固体の創成が実現されれば、より優れた二次電池開発につながる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2019 2017

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Divalent Ni2+ cation conduction in NASICON-type solid2019

    • Author(s)
      Lee Wonrak、Yamauchi Shota、Tamura Shinji、Imanaka Nobuhito
    • Journal Title

      Materials Letters

      Volume: 234 Pages: 261-263

    • DOI

      10.1016/j.matlet.2018.09.095

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and Characterization of Divalent Ion Conductors with NASICON-type Structure2019

    • Author(s)
      Wonrak Lee, Shinji Tamura, and Nobuhito Imanaka
    • Journal Title

      Journal of Asian Ceramic Societies

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
  • [Journal Article] New Calcium Ion Conducting Solid Electrolyte with NASICON-type Structure2017

    • Author(s)
      Lee Wonrak、Tamura Shinji、Imanaka Nobuhito
    • Journal Title

      Chemistry Letters

      Volume: 46 Issue: 10 Pages: 1486-1489

    • DOI

      10.1246/cl.170634

    • NAID

      130006140017

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Divalent Calcium Ion-conducting Novel Solid Electrolyte with Three-dimensional NASICON Type Structure2017

    • Author(s)
      Lee Wonrak, Shinji Tamura, and Nobuhito Imanaka
    • Organizer
      9th Kyoto International Forum for Environment and Energy (9th KIFEE)
    • Place of Presentation
      Doshisha University (Kyoto)
    • Year and Date
      2017-03-07
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ca2+イオンを伝導種とする新規な固体電解質2017

    • Author(s)
      Wonrak Lee、田村 真治、今中 信人
    • Organizer
      第19回 化学電池材料研究会ミーティング
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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