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Development of composite bipolar plate for polymer electrolyte membrane fuel cell

Research Project

Project/Area Number 19K05091
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionIwate University

Principal Investigator

Yashiro Hitoshi  岩手大学, 理工学部, 教授 (60174497)

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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsPEFC / セパレーター / アルミニウム / 腐食 / 固体高分子形燃料電池 / セパレータ
Outline of Research at the Start

来るべき水素社会の実現に向けて、固体高分子形燃料電池の軽量化、低コスト化に不可欠なセパレーターの技術開発を、腐食科学の視点を中心に推進する。セパレーターに必要な機能のうち、ガス隔絶機能を金属板に、流路形成機能を炭素系材料に担わせた複合型セパレータを試作し、金属板に要求される耐食性を評価する。金属板の候補材として、チタンより軽いアルミニウム系材料を取り上げ、実環境での腐食速度を評価したうえで、必要に応じて表面処理を実施する。

Outline of Final Research Achievements

In order to reduce the weight of the bipolar plates for polymer electrolyte fuel cells, a composite bipolar plate consisting of a carbon channel forming material and a reaction gas isolation plate made of aluminum (Al) has been proposed. When Al was not surface-treated, the cell voltage was not high enough due to the contact resistance with the flow path forming material, but the cell was successfully operated for 1000 hours. After the operation, Al maintained its luster on the cathode side, but turned white on the anode side, and an oxide film with a thickness of 1 μm or more was formed. By comparison with the results of the corrosion test of Al in the simulated environment, this result was considered to indicate that condensed water was generated on the anode side. On the other hand, when Al plate was treated with TiN-SBR, the cell performance was comparable to that using a carbon bipolar plate.

Academic Significance and Societal Importance of the Research Achievements

燃料電池車を普及させるため、セパレーターの重量と価格を下げることが強く望まれている。アルミニウム(Al)は軽量で低価格なことから、セパレーター材料として期待されているが、ガス拡散層と直接接触する状態での使用は、耐食性の点で困難と考えられていた。本研究では、セパレーターを流路形成材と反応ガス隔離板とに分け、Alを隔離板に使うことを提案した。その結果Alに接触抵抗改善のために表面処理を行うことで、優れた発電性能が得られることを実証できた。また、Alを隔離板として使用して発電試験を行うことで、直接観察することが困難な、流路内における凝縮水発生の有無を間接的に評価できることも明らかとなった。

Report

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

    (13 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results) Presentation (9 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Corrosion Behavior of Aluminum in Dilute Fluoride and Sulfate Solutions for Use as Bipolar Plate of PEFC2021

    • Author(s)
      M. A. Alama, A. Jahan, E. Suzuki, H. Yashiro
    • Journal Title

      ECS Transactions

      Volume: 102 Pages: 37-43

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Investigation of Corrosion Performance of Pure Aluminum as Bipolar Plate in PEMFC Environment2021

    • Author(s)
      A. Jahan, M. A. Alam, S. Yonezawa, E. Suzuki, H. Yashiro
    • Journal Title

      ECS Transactions

      Volume: 102 Pages: 45-52

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Corrosion Behavior of Pure Aluminum in the Simulated PEMFC Environment2021

    • Author(s)
      Md. Ashraful Alam, Aklima Jahan, Ayumu Minoura, Sekai Yonezawa, Eiichi Suzuki and Hitoshi Yashiro
    • Journal Title

      Zairyo-to-Kankyo

      Volume: 70 Pages: 64-67

    • NAID

      130008084373

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 結晶粒微細化ステンレス鋼へのナノ窒化物層導入とPEFC用セパレータへの適用2019

    • Author(s)
      遊佐碩典, 八代 仁, 熊谷昌信
    • Journal Title

      材料と環境

      Volume: 68 Pages: 143-147

    • NAID

      130007751492

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Corrosion Behavior of Aluminum-Carbon Composite Bipolar Plates in Polymer Electrolyte Membrane Fuel Cells2022

    • Author(s)
      A. Jahan, M. A. Alam, S. Yonezawa, E. Suzuki, H. Yashiro
    • Organizer
      241st ECS Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アルミニウム―カーボン複合セパレータを用いた PEFC セルにおけるアルミニウムの腐食解析2021

    • Author(s)
      米澤世芽生, Aklima Johan, Md. Ashraful Alam, 八代 仁
    • Organizer
      第68回材料と環境討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Corrosion analysis of aluminum in PEFC using aluminum-carbon combined bipolar plates2021

    • Author(s)
      Sekai Yonezawa, Aklima Jahan, Md. Ashraful Alam, Hitoshi Yashiro
    • Organizer
      令和3年度 化学系学協会東北大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] PEFC用アルミニウムーカーボン複合セパレータの腐食解析2021

    • Author(s)
      令和3年度 腐食防食学会東北支部講演会
    • Organizer
      米澤世芽生、Jahan Aklima, Alam Md Ashraful, 八代 仁
    • Related Report
      2021 Annual Research Report
  • [Presentation] Corrosion analysis of aluminum-based materials as bipolar plate2020

    • Author(s)
      米澤世芽生, 鈴木映一, 八代仁
    • Organizer
      化学系学協会東北大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Corrosion Behavior of Pure Aluminum in the Simulated PEMFC Environment2020

    • Author(s)
      Md. Ashraful Alam, Aklima Jahan, Ayumu Minoura, Sekai Yonezawa, Eiichi Suzuki, Hitoshi Yashiro
    • Organizer
      第67回材料と環境討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] アルミニウム―グラファイト複合セパレータを用いたPEFCの発電特性2020

    • Author(s)
      米澤世芽生, 鈴木映一, 八代 仁
    • Organizer
      第67回材料と環境討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] Surface modification of stainless steel bipolar plate for PEFC by TiN/SBR2019

    • Author(s)
      箕浦歩夢,吉野一郎,永井久司,鈴木映一, 八代仁
    • Organizer
      化学系学協会東北大会
    • Related Report
      2019 Research-status Report
  • [Presentation] TiN/SBRを用いたPEFC用ステンレス鋼セパレータの表面処理2019

    • Author(s)
      箕浦歩夢, 鈴木映一, 八代 仁, 永井久司, 吉野一郎
    • Organizer
      腐食防食学会東北地区講演会
    • Related Report
      2019 Research-status Report

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

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