• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of mixed-anion hydride materials with ionics propeties

Research Project

Project/Area Number 22K14755
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
Research InstitutionInstitute of Physical and Chemical Research (2023)
Institute for Molecular Science (2022)

Principal Investigator

Takeiri Fumitaka  国立研究開発法人理化学研究所, 開拓研究本部, 研究員 (20824080)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywordsヒドリド / 複合アニオン / メカノケミストリー / 高圧合成 / メカノケミカル / ヒドリド導電 / 酸水素化物 / メカノケミカル合成 / 水素化物 / イオニクス
Outline of Research at the Start

ヒドリドイオンが電荷担体としてふるまうイオン導電体(ヒドリド導電体)は、金属水素化物または酸水素化物において報告が相次いでいるが、実際に材料として求められる特性(高い導電率・小さな粒界抵抗・安定性など)を十分に満足するものは未だ不在である。本研究では、ヒドリド導電体の探索領域を、水素化ハロゲン化物や水素化カルコゲン化物といったより広義な複合アニオン化合物へと拡張し、新物質・新材料の発見を目指す。

Outline of Final Research Achievements

A room-temperature working hydride electrolyte has been successfully developed by compositional optimization of lanthanum hydride LaH3 based on mixed-anion. We have also discovered several new materials by focusing on sulfide ions, which have been limited in their mixed-anion with hydride. We also succeeded in high-pressure synthesis of hydride compounds containing GaO4 polyanions and found that their crystal structures adopt anti-perovskite structures. We have also developed hydride materials by mechanochemical methods, and in addition to their average structure, we have analyzed their local structures in a joint research project, and obtained findings that suggest a correlation with their functions.

Academic Significance and Societal Importance of the Research Achievements

本研究では、近年発展の著しいヒドリド化合物の探索範囲を、従来の水素化物または酸水素化物から大幅に拡張し、実際に幾つかの新物質の発見に成功し、またイオニクスに代表される機能性を見出した。代表的な成果である、室温で作動するヒドリド電解質の開発は、将来的なヒドリド電気化学デバイスの開発という観点から重要なマイルストーンとなる。

Report

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

    (10 results)

All 2023 2022

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 4 results)

  • [Journal Article] A new family of anti-perovskite oxyhydrides with tetrahedral GaO<sub>4</sub> polyanions2023

    • Author(s)
      Ayu Nur Ika Puji、Takeiri Fumitaka、Ogawa Takafumi、Kuwabara Akihide、Hagihala Masato、Saito Takashi、Kamiyama Takashi、Kobayashi Genki
    • Journal Title

      Dalton Transactions

      Volume: 52 Issue: 42 Pages: 15420-15425

    • DOI

      10.1039/d3dt01555f

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electropositive Metal Doping into Lanthanum Hydride for H<sup>?</sup> Conducting Solid Electrolyte Use at Room Temperature2023

    • Author(s)
      Izumi Yoshiki、Takeiri Fumitaka、Okamoto Kei、Saito Takashi、Kamiyama Takashi、Kuwabara Akihide、Kobayashi Genki
    • Journal Title

      Advanced Energy Materials

      Volume: 13 Issue: 43 Pages: 2301993-2301993

    • DOI

      10.1002/aenm.202301993

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of Na Concentration on the Phase Transition Behavior and H- Conductivities in the Ba-Li-Na-H-O Oxyhydride System2022

    • Author(s)
      Okamoto Kei、Takeiri Fumitaka、Imai Yumiko、Yonemura Masao、Saito Takashi、Ikeda Kazutaka、Otomo Toshiya、Kamiyama Takashi、Kobayashi Genki
    • Journal Title

      Advanced Science

      Volume: 10 Issue: 1 Pages: 2203541-2203541

    • DOI

      10.1002/advs.202203541

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Stabilization of a high H--conducting phase via K doping of Ba-Li oxyhydride2022

    • Author(s)
      Okamoto Kei、Takeiri Fumitaka、Imai Yumiko、Yonemura Masao、Saito Takashi、Ikeda Kazutaka、Otomo Toshiya、Kamiyama Takashi、Kobayashi Genki
    • Journal Title

      Journal of Materials Chemistry A

      Volume: 10 Issue: 43 Pages: 23023-23027

    • DOI

      10.1039/d2ta06278j

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] Hydride ion conducting materials for new electrochemical reactions2023

    • Author(s)
      Fumitaka Takeiri
    • Organizer
      2023 Joint seminar of Tanaka-Lab, Kageyama Lab, Ohta-Lab
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Development of hydride-ion conductors toward new electrochemical reactions2023

    • Author(s)
      Fumitaka takeiri, Genki Kobayashi
    • Organizer
      SIPS2023
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] GaO4 ポリアニオンを含むアンチペロブスカイト型酸水素化物2023

    • Author(s)
      竹入史隆, 小林玄器, Nur Ika Puji Ayu, 萩原雅人, 齊藤高志, 神山崇, 小川貴史, 桑原彰秀
    • Organizer
      日本セラミックス協会2023年年会
    • Related Report
      2022 Research-status Report
  • [Presentation] ヒドリド物質の固体化学とイオニクス材料への展開2022

    • Author(s)
      竹入史隆
    • Organizer
      九州大学先導研講演会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] ヒドリドの固体化学とイオニクス材料への展開2022

    • Author(s)
      竹入史隆
    • Organizer
      信州大学RISMセミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Direct preparation of barium titanate oxyhydride exhibiting H-/e- mixed conduction2022

    • Author(s)
      F. Takeiri, T. Uchimura, T. Saito, T. Kamiyama, G. Kobayashi
    • Organizer
      ACSSI2020
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2022-04-19   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi