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Transport phenomena of proton and water in PEFC by MRI and its application to high stability and performance

Research Project

Project/Area Number 16360103
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

HIRAI Shuichiro  Tokyo Institute of Technology, Research Center for Carbon Recycling and Energy, Professor, 炭素循環エネルギー研究センター, 教授 (10173204)

Co-Investigator(Kenkyū-buntansha) SUEKANE Tetsuya  Tokyo Institute of Technology, Research Center for Carbon Recycling and Energy, Senior Professor, 炭素循環エネルギー研究センター, 助教授 (30262314)
TSUSHIMA Shoji  Tokyo Institute of Technology, Graduate School of Science and Engineering, Associate Professor, 大学院・理工学研究科, 助手 (30323794)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥15,100,000 (Direct Cost: ¥15,100,000)
Fiscal Year 2005: ¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 2004: ¥9,100,000 (Direct Cost: ¥9,100,000)
Keywordspolymer electrolyte fuel cell / magnetic resonance imaging / Grotthuss mechanism / gas diffusion layer / lattice Boltzmann method
Research Abstract

Polymer electrolyte fuel cells (PEFCs) are promising power sources for vehicle applications and on-site power generation. One of the most important materials under development for PEFC stacks is a polymer electrolyte membrane (PEM), which conducts protons the anode to the cathode side, and it is well known that its proton conductivity depends on its water content. It implies that water in a PEM strongly relate to proton conducting mechanism. Here, we demonstrate the ^1H and ^2D atom replace in the electrolyte membrane by supplying hydrogen (H_2) or deuterium (D_2) as the fuel for the PEFC operation. By supplying deuterium as the fuel, D^+ comes into the electrolyte membrane by oxidation reaction, and replace with protons that are counter ion of sulfonic acid group and/or hydrogen atoms of water molecule. We measure the H atom distribution change after switching hydrogen to heavy hydrogen supply by the magnetic resonance imaging (MRI). The MR images clearly show that the replacement of … More the H and D atoms takes place in the anode side (fuel supply side), and D atoms replace almost all H atoms in the electrolyte membrane. This suggests the proton conducting mechanism in the polymer electrolyte membrane is 'bulk mechanism', which protons transport by Grotthuss mechanism in the water of hydrophilic region of the membrane^<7,8>, rather than 'surface mechanism' or 'vehicular mechanism'.
Water vapor distribution is a cathode channel of polymer electrolyte fuel cell (PEFC) composed of gas supply channel and porous gas diffusion layer is calculated by lattice Boltzmann method (LBM) in order to clarify effect of porous structure of GDL in PEFC on water distribution and dew point of supplied gas. It is shown that porosity of GDL affects maximum water concentration emerged in the GDL, resulting in increase of dew point with decrease of porosity. On the other hand, pore scale in the GDL is less influential on water concentration distribution and its sesultant dew point of the supplied gas in the cathode of PEFC. Less

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (16 results)

All 2005 2004

All Journal Article (16 results)

  • [Journal Article] Experimental elucidation of nano-scale proton conduction mechanism in proton exchange fuel cell membrane by nuclei labeling in MRI2005

    • Author(s)
      Hirai, S, Tsushima, S, Teranishi, K
    • Journal Title

      Japan/U.S. Joint Seminar, Nanoscale Transport Phenomena -Science and Engineering-

      Pages: 24-24

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 同位体核ラベリングを用いた電解質膜内プロトン移動機構の解明2005

    • Author(s)
      津島将司, 寺西一浩, 西田耕介, 平井秀一郎
    • Journal Title

      第46回電池討論会講演論文集

      Pages: 848-849

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] 燃料電池多孔質電極内物質輸送現象のLBM解析2005

    • Author(s)
      津島将司, 阪口道洋, 西田耕介, 平井秀一郎
    • Journal Title

      熱工学コンファレンス2005講演論文集

      Pages: 267-268

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] PEFC多孔質電極内水分輸送現象のLBM数値シュミレーション2005

    • Author(s)
      平井秀一郎, 阪口道洋, 西田耕介, 津島将司
    • Journal Title

      第42回伝熱シンポジウム講演論文集 I

      Pages: 93-94

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 発電モード1H/2D置換MRI計測による電解質膜内プロトン輸送機構に関する研究2005

    • Author(s)
      寺西一浩, 津島将司, 西田耕介, 平井秀一郎
    • Journal Title

      第42回伝熱シンポジウム講演論文集 II

      Pages: 249-250

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Experimental elucidation of nano-scale proton conducting mechanism in proton exchange fuel cell membrane by nuclei labeling in MRI2005

    • Author(s)
      Hirai, S., Tsushima, S., Teranishi, K.
    • Journal Title

      Japan/U.S. Joint Seminar, Nanoscale Transport Phenomena -Science and Engineering-

      Pages: 24-24

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Elucidation of Proton Conducting Mechanism in Polymer Electrolyte Membrane using Isotope Labeling Method.2005

    • Author(s)
      Tsushima, S., Teranishi, K., Nishida, K.Hirai, S.
    • Journal Title

      The 46th Battery Symposium in Japan

      Pages: 848-849

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] LBM analysis on Mass Transport in Gas Diffusion Layers in PEFC.2005

    • Author(s)
      Tsushima, S., Sakaguchi, M., Nishida, K., Hirai, S.
    • Journal Title

      Proceeding of Thermal Engineering Conference

      Pages: 267-268

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Water Transport Analysis in a Porous Electrode in PEFC by LBM Simulation.2005

    • Author(s)
      Hirai, S., Sakaguchi, M., Nishida, K., Tsushima, S.
    • Journal Title

      42nd National Heat Transfer Symposium of Japan Vol.1

      Pages: 93-94

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Study on proton transport mechanism in a polymer electrolyte membrane by H/D replace MRI under fuel cell operation.2005

    • Author(s)
      Teranishi, K., Tsushima, S., Nishida, K., Hirai, S.
    • Journal Title

      42nd National Heat Transfer Symposium of Japan Vol.2

      Pages: 249-250

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Experimental elucidation of nano-scale proton conducting mechanism in proton exchange fuel cell membrane by nuclei labeling in MRI-2005

    • Author(s)
      Hirai, S., Tsushima, S., Teranishi, K.
    • Journal Title

      Japan/U.S.Joint Seminar, Nanoscale Transport Phenomena-Science and Engineering.

      Pages: 24-24

    • Related Report
      2005 Annual Research Report
  • [Journal Article] PEFC多孔質電極内水分輸送現象のLBM数値シミュレーション2005

    • Author(s)
      平井秀一郎, 阪口道洋, 西田耕介, 津島将司
    • Journal Title

      第42回伝熱シンポジウム講演論文集

      Pages: 93-94

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 発電モード1H/2D置換MRI計測による電解質膜内プロトン輸送機構に関する研究2005

    • Author(s)
      寺西一浩, 津島将司, 西田耕介, 平井秀一郎
    • Journal Title

      第42回伝熱シンポジウム講演論文集

      Pages: 249-250

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 発電モード1H/2D置換MRI計測による電解質膜内プロトン輸送機構に関する研究2005

    • Author(s)
      寺西一浩, 津島将司, 西田耕介, 平井秀一郎
    • Journal Title

      第42回日本伝熱シンポジウム講演論文集 (発表予定)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] カソード多孔質電極内水分/空気輸送現象の数値シミュレーション2004

    • Author(s)
      阪口道洋, 平井秀一郎, 西田耕介, 津島将司
    • Journal Title

      第45回電池討論会講演論文集

      Pages: 90-91

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 電極多孔質構造を包含したカソード内水分移動の数値シミュレーション2004

    • Author(s)
      阪口道洋, 平井秀一郎, 西田耕介, 津島将司
    • Journal Title

      熱工学コンファレンス2004講演論文集

      Pages: 35-36

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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