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Development of Solid Oxide Fuel Cells resistant for oxidation and reduction

Research Project

Project/Area Number 20K15392
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionOsaka Research Institute of Industrial Science and Technology

Principal Investigator

Yamaguchi Shimpei  地方独立行政法人大阪産業技術研究所, 和泉センター, 主任研究員 (40761002)

Project Period (FY) 2020-04-01 – 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: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords固体酸化物形燃料電池 / 酸化・還元耐性 / 再生可能エネルギー / バイオマス / 水素 / エネルギー / 水素エネルギー / 脱炭素 / 再生機能 / 電気化学 / 酸化還元 / 触媒 / 再生
Outline of Research at the Start

再生可能エネルギーを効率よく電力に変換できる固体酸化物形燃料電池(SOFC)は、燃料極の酸化・還元耐性が低いため、急な環境変化によって壊れやすい課題がある。本研究では、酸化によりNiが結晶へ固溶し、還元によりNiが結晶から析出・分散化することのできる再生機能を有する酸化物の燃料極への複合化を試みる。これによって、燃料極の酸化・還元耐性を高めることで、起動・停止が可能なSOFCの開発を目的とする。そのために、①計算熱力学を用いた再生機能に優れる酸化物の合成条件、②燃料極の酸化・還元耐性向上のメカニズム、③酸化・還元耐性が向上するセルの作製条件を明らかにする。

Outline of Final Research Achievements

To facilitate utilizations of renewable energy, solid oxide fuel cells (SOFCs) which can convert hydrogen, carbon monoxide, and hydrocarbons originated from renewable energy into electricity efficiently attract much attention nowadays. However poor durability of fuel electrodes of SOFCs in reduction and oxidation (red-ox) is a matter for development. In this study, we tried to enhance the red-ox durability of fuel electrodes, by fabricating complex fuel electrode with red-ox durable spinel oxide. In the spine oxide, Ni particles with sizes of ca. 5-50 nm exsoluted from the oxide in reduction and the initial oxide can be regenerated again in oxidation. The regenerative mechanism of spine oxide is considered to contribute the red-ox durability. Poor electron conductivity of the spinel oxide decreases the electrochemical performance of SOFCs.

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、酸化・還元によって再生する複合酸化物を固体酸化物形燃料電池の燃料極へ複合化することで、燃料極の酸化・還元耐性の向上を目指したもので、これまでにないコンセプトに基づくものであり、新規性は高い。性能面では、燃料極の導電性が低下する課題があるが、構造最適化を行うことで、性能向上につながる可能性が確認されている。これらの知見は、エネルギー学、材料化学、化学工学などの学問分野に貢献するため、学術的意義も大きいものである。また、本研究成果の先には、高耐久・高効率の発電デバイスへの応用が期待されるため、産業界への寄与は大きいものであり、社会的意義も大きいものである。

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (8 results) (of which Int'l Joint Research: 4 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Characteristics of solid oxide fuel cells in gasified gases from biomass2021

    • Author(s)
      Yamaguchi S.、Muroyama H.、Matsui T.、Eguchi K.
    • Journal Title

      Journal of Power Sources

      Volume: 488 Pages: 229467-229467

    • DOI

      10.1016/j.jpowsour.2021.229467

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Regenerative spinel oxide catalysts for efficient production of energy from biomass2023

    • Author(s)
      Shimpei Yamaguchi, Masashi Ootani, Tomoatsu Ozaki, and Takeshi Suyama.
    • Organizer
      Sintering2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Regenerative spinel oxide catalysts for methane utilizations2022

    • Author(s)
      Shimpei Yamaguchi, Tomoatsu Ozaki, Takeshi Suyama, and Masashi Ootani
    • Organizer
      46th International Conference and Expo on Advanced Ceramics and Composites (ICACC2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] ガス化と燃料電池を利用したバイオマスガス化発電技術2022

    • Author(s)
      山口真平
    • Organizer
      TMC技術研修会
    • Related Report
      2021 Research-status Report
  • [Presentation] 脱炭素を目指したバイオマスのガス化発電2021

    • Author(s)
      山口真平、尾﨑友厚、陶山剛
    • Organizer
      ORIST 技術シーズ・成果発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 脱炭素に不可欠な固体酸化物形燃料電池2021

    • Author(s)
      山口真平
    • Organizer
      ORIST技術セミナー
    • Related Report
      2021 Research-status Report
  • [Presentation] 勘の数値化による粉体製造の省エネルギー化2021

    • Author(s)
      陶山剛、山口真平
    • Organizer
      ORIST 技術シーズ・成果発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] Solid Oxide Fuel Cells with Red-Ox durable anode containing regenerative spinel oxides2021

    • Author(s)
      Yamaguchi Shimpei, Ozaki Tomoatsu, and Suyama Takeshi
    • Organizer
      45th International Conference and Expo on Advanced Ceramics and Composites (ICACC2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Feasibility Study for Electrochemical Toluene Oxidation over Solid Oxide Cells2021

    • Author(s)
      Yamaguchi Shimpei, Ozaki Tomoatsu, Inaoka Koji, Yamada Yuki, Baba Tatsuya, Saito Masaki, and Aoyama Erika
    • Organizer
      45th International Conference and Expo on Advanced Ceramics and Composites (ICACC2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] NiAl2O4とγ-Al2O3とZrO2とが複合化した複合酸化物、当該複合酸化2022

    • Inventor(s)
      山口真平、尾﨑友厚、陶山剛、大谷昌司、森山香名
    • Industrial Property Rights Holder
      (地独)大阪産業技術研究所、関西触媒化学(株)
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-007756
    • Filing Date
      2022
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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