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Interface chemistry of electrochemical reaction on the surface of proton conducting solid oxide

Research Project

Project/Area Number 21K04981
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 32010:Fundamental physical chemistry-related
Research InstitutionKyushu University

Principal Investigator

Tachikawa Yuya  九州大学, 工学研究院, 准教授 (70587857)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords固体酸化物セル / 燃料電池 / 水蒸気電解 / 電気化学インピーダンス / 表面化学 / 電気化学 / イオン伝導性酸化物 / プロトン伝導性固体酸化物
Outline of Research at the Start

プロトン伝導性固体酸化物の表面での反応特性の解明に着目して研究を行う。本研究では、表面素反応に着目してこの材料の表面特性を明らかにするため、電気化学インピーダンス法の緩和時間分布に着目した計測手法を用いて電気化学セルの作動特性評価を吸脱着と拡散に着目して実施する。プロトン伝導性固体酸化物表面の界面化学・電気化学特性の解明を目指し、その成果を活かした次世代高効率エネルギーシステム創出へつなげる。

Outline of Final Research Achievements

To clarify the surface properties of proton-conductive materials among ion-conductive solid oxide materials at high temperatures, we conducted a study to evaluate the operating characteristics of electrochemical cells by analyzing and measuring the distribution of relaxation time by electrochemical impedance spectroscopy. Although some measurement issues remained, we were able to overcome the electrolyte-induced performance drop by using different ion-conducting materials. This study also demonstrated that the above-mentioned electrochemical impedance spectroscopy as a measurement method, which focuses on the distribution of relaxation time, can be used for detailed analysis and comparison of the properties.

Academic Significance and Societal Importance of the Research Achievements

固体酸化物材料は燃料電池や水蒸気電解などの電気化学エネルギー変換技術の核となる材料であり、その新規材料開発ならびに本研究で着目した材料の有する特性の評価解析を進める分析手法の技術向上は、今後のさらなる技術革新を進め学術的理解を深める上で、学術的に意義がある。また、上記材料の用いられるデバイスはエネルギーの脱炭素化とエネルギー利用の高効率化・高性能化を進める上で社会的に注目されており、本研究成果の展開による社会的な貢献も期待できる。

Report

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

    (3 results)

All 2022 Other

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

  • [Journal Article] Design Optimization of Highly Efficient SOEC Co-Electrolysis Processes2022

    • Author(s)
      Nakashima Yuhei、Tachikawa Yuya、Sasaki Kanzunari
    • Journal Title

      ECS Transactions

      Volume: 109 Issue: 11 Pages: 25-35

    • DOI

      10.1149/10911.0025ecst

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] Design Optimization of Highly Efficient SOEC Co-Electrolysis Processes2022

    • Author(s)
      Nakashima Yuhei、Tachikawa Yuya、Sasaki Kanzunari
    • Organizer
      242nd ECS meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Remarks] 九州大学研究者情報

    • URL

      https://hyoka.ofc.kyushu-u.ac.jp/search/details/K004144/

    • Related Report
      2023 Annual Research Report

URL: 

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

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