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Systematic Design and Water Transport Analysis of Acid-Alkaline Hybrid Fuel Cells

Research Project

Project/Area Number 19K05148
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 27030:Catalyst and resource chemical process-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Oshiba Yuhei  東京工業大学, 科学技術創成研究院, 助教 (10708530)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords酸-アルカリハイブリッド燃料電池 / 低白金 / カーボンアロイ触媒 / 水挙動 / 細孔フィリング薄膜
Outline of Research at the Start

固体高分子形燃料電池の更なる普及のためには、触媒である白金の使用量低減が課題である。また、反応ガスは加湿して電池に供給しているが、電池内で発生する水を有効に利用した自己加湿が可能となれば、システムの小型化が実現できる。本研究では、燃料電池システムの極低白金化、自己加湿を目指して、酸-アルカリハイブリッド燃料電池のシステム設計を行う。酸環境のアノードで白金量を減らし、アルカリ環境のカソードでは非白金系のカーボンアロイ触媒の利用により、システム全体の効果的な白金使用量低減を目指す。また、ハイブリッド燃料電池における電解質膜内の水移動モデルを構築し、自己加湿を実現する電解質膜の設計指針獲得を目指す。

Outline of Final Research Achievements

In this study, we designed acid-alkaline hybrid fuel cell system to achieve extremely low platinum content and self-humidification in a fuel cell system. The hybrid fuel cell developed in this research demonstrated both high open-circuit voltage and low anode overpotential despite the use of a low platinum loading carbon catalyst for the anode and a non-platinum carbon alloy catalyst for the cathode, demonstrating the usefulness of the hybrid fuel cell.

Academic Significance and Societal Importance of the Research Achievements

本課題で開発した酸-アルカリハイブリッド燃料電池により、従来の燃料電池と比較して白金量を20分の1に低減できる可能性を示した。これは、燃料電池の課題である、高い白金コストの大幅な低減に寄与する成果といえ、更なる酸-アルカリハイブリッド燃料電池性能の向上により、燃料電池自動車の普及促進につながると期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (8 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

  • [Journal Article] Chemical durability of thin pore-filling membrane in open-circuit voltage hold test2019

    • Author(s)
      Oshiba Yuhei、Kosaka Megumu、Yamaguchi Takeo
    • Journal Title

      International Journal of Hydrogen Energy

      Volume: 44 Issue: 54 Pages: 28996-29001

    • DOI

      10.1016/j.ijhydene.2019.09.143

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Highly stable membrane-electrode assembly using ether-linkage-free spirobifluorene-based aromatic polyelectrolytes for direct formate solid alkaline fuel cells2019

    • Author(s)
      Kuroki Hidenori、Miyanishi Shoji、Sakakibara Ayaka、Oshiba Yuhei、Yamaguchi Takeo
    • Journal Title

      Journal of Power Sources

      Volume: 438 Pages: 226997-226997

    • DOI

      10.1016/j.jpowsour.2019.226997

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Thin pore-filling polymer electrolyte membranes and their chemical durability for polymer electrolyte fuel cells2020

    • Author(s)
      Yuhei Oshiba, Jin Tomatsu, Megumu Kosaka, Takeo Yamaguchi
    • Organizer
      International Congress on Membranes & Membrane Processes 2020 (ICOM2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 燃料拡散を考慮した直接ギ酸塩溶液型固体アルカリ燃料電池モデルの構築2020

    • Author(s)
      山﨑はるか、大柴雄平、松本秀行、山口 猛央
    • Organizer
      化学工学会 第85年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 高スルホン酸基密度アイオノマー充填細孔フィリング電解質薄膜を用いた膜電極接合体の化学耐久性評価2020

    • Author(s)
      大柴雄平、小坂恵夢、山口猛央
    • Organizer
      化学工学会 第85年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 高温低湿度作動に向けた固体高分子形燃料電池用細孔フィリング電解質薄膜の開発と電池特性評価2019

    • Author(s)
      大柴 雄平、戸松仁、小坂恵夢、山口 猛央
    • Organizer
      第8回 JACI/GSCシンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] Mass balance model for Solid-state Alkaline Fuel Cells considering water transport in polymer electrolyte membrane2019

    • Author(s)
      Haruka Yamazaki, Yuhei Oshiba, Takeo Yamaguchi
    • Organizer
      APPChE2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Pore-filling Membrane with Hydrocarbon Ionomer for Polymer Electrolyte Water Electrolysis2019

    • Author(s)
      Yuki Matsuno, Yuhei Oshiba, Takeo Yamaguchi
    • Organizer
      APPChE2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Systematic design of thin Pore-filling Polymer Electrolyte Membranes for Next-generation fuel cells2019

    • Author(s)
      Yuhei Oshiba
    • Organizer
      PSRT Lecture Series-2, Cochin University of Science and Technology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of thin Pore-filling Polymer Electrolyte Membranes for Next-generation fuel cells2019

    • Author(s)
      Yuhei Oshiba
    • Organizer
      International conference on Separation Science and Technology (ICST 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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