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Nano-scale nitridation of stainless steel as bipolar plates for proton exchange membrane fuel cells

Research Project

Project/Area Number 16K06789
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Material processing/Microstructural control engineering
Research InstitutionIwate University

Principal Investigator

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

Research Collaborator MYUNG Seung-Taek  
KUMAGAI Masanobu  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords固体高分子形燃料電池 / セパレーター / ステンレス鋼 / 電気化学的窒化 / 腐食 / セパレータ / 窒化 / 表面処理 / 材料加工・処理 / 燃料電池
Outline of Final Research Achievements

In order to put stainless steel bipolar plate into practical use of PEFC, surface modification is necessary to reduce interfacial contact resistance (ICR) between bipolar plate material and carbon gas diffusion layer. In this study, electrochemical nitridation (ECN) was applied to stainless steel to form ultrathin nitride layer which reduced ICR successfully. The ECN treatment was more effective for fine-grained stainless steel with respect of stability against anodic polarization. The ECN treatment was applied to the fine-grained stainless steel for use as bipolar plates. The cell performance was comparable to that with graphite bipolar plates, proving that the ECN treated stainless steel with fine grains is a promising candidate material for PEFC bipolar plates.

Academic Significance and Societal Importance of the Research Achievements

固体高分子形燃料電池(PEFC)を構成する材料の中で、セパレーターが質量と価格の大きな割合を占めていることから、これを安価なステンレス鋼でつくることが望まれている。ステンレス鋼表面には不動態皮膜が存在して大きな抵抗となるため、これを解決する方法として、簡便な電気化学的処理を行った結果、非常に薄い窒化物層を形成させることに成功した。この処理を行ったステンレス鋼をセパレーターとするPEFC単セルは、高価なグラファイト製セパレーターを用いたセルと同等の性能を示したことから、PEFCのコスト低下に貢献すると期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (10 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [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,永井久司, 吉野一郎
    • Journal Title

      材料と環境

      Volume: 68

    • NAID

      130007751492

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stability of type 310S stainless steel bipolar plates tested at various current densities in proton exchange membrane fuel cells2016

    • Author(s)
      Masanobu Kumagai, Seung-Taek Myung, Yasuyuki Katada, Hitoshi Yashiro
    • Journal Title

      Electrochimica Acta

      Volume: 211 Pages: 754-760

    • DOI

      10.1016/j.electacta.2016.06.106

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Surface modification of stainless steel bipolar plate for PEFC by TiN-SBR2018

    • Author(s)
      A. Minoura, S. Arai, M. Kumagai, E. Suzuki, H. Yashiro
    • Organizer
      化学系学協会東北大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ステンレス鋼表面への窒化物層導入とPEFC用セパレータへの応用2018

    • Author(s)
      遊佐 碩典, 八代 仁*, 熊谷 昌信
    • Organizer
      第65回材料と環境討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 介在物低減化処理を施した SUS316L ステンレス鋼表面への ナノ窒化物層導入とPEFC 用セパレータへの適用2018

    • Author(s)
      遊佐 碩典, 鈴木 映一, 呉 松竹, 八代 仁, 熊谷 昌信
    • Organizer
      平成29年度腐食防食学会 東北支部講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Electrochemically nitrided stainless steel as bipolar plates for proton exchange membrane fuel cells2017

    • Author(s)
      H.Yusa, M.Kumagai, E.Suzuki, Kure-Chu, H.Yashiro
    • Organizer
      平成29年度化学系学協会東北大会
    • Related Report
      2017 Research-status Report
  • [Presentation] ステンレス鋼表面へのナノ窒化物層導入とPEFC用セパレータへの適用2017

    • Author(s)
      遊佐 碩典、鈴木映一、呉松竹、八代仁、熊谷昌信
    • Organizer
      表面技術協会・腐食防食学会 東北支部講演会
    • Place of Presentation
      仙都会館(宮城県仙台市)
    • Related Report
      2016 Research-status Report
  • [Presentation] 泳動電着法によりTiN-ラテックス複合層を被覆したSUS316L 鋼セパレータ評価2016

    • Author(s)
      砂田 聡,竹内彰吾,畠山賢彦,熊谷昌信,吉野一郎,安永和史,小澤卓也,八代 仁
    • Organizer
      第63回材料と環境討論会
    • Place of Presentation
      大阪国際会議場(大阪府大阪市)
    • Year and Date
      2016-10-17
    • Related Report
      2016 Research-status Report
  • [Presentation] Single cell performance of PEFC using the surface-treated stainless steel bipolar plate2016

    • Author(s)
      Takuya Ozawa, Hitoshi Yashiro, Masahiko Hatakeyama, Satoshi Sunada, Masanobu Kumagai, Ichiro Yoshino
    • Organizer
      Prime2016
    • Place of Presentation
      Hawaii, USA
    • Year and Date
      2016-10-02
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] PEFC用ステンレス鋼製セパレータの開発2016

    • Author(s)
      八代 仁
    • Organizer
      表面技術協会第134回講演大会
    • Place of Presentation
      東北大学(宮城県仙台市)
    • Related Report
      2016 Research-status Report
    • Invited

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Published: 2016-04-21   Modified: 2020-03-30  

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