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    • 10. 发明授权
    • Fuel cell
    • 燃料电池
    • US07981570B2
    • 2011-07-19
    • US12579520
    • 2009-10-15
    • Takahiro TakaiMasao Utsunomiya
    • Takahiro TakaiMasao Utsunomiya
    • H01M4/64
    • H01M8/04029H01M8/021H01M8/0228H01M8/0263H01M8/0267H01M8/241
    • The present invention provides a fuel cell having a layered structure, including: a membrane electrode assembly having a fuel electrode, an oxidation electrode, and an electrolyte membrane held between the fuel electrode and the oxidation electrode; and stainless steel separators holding the membrane electrode assembly therebetween. The stainless steel separator contains Cr and Fe; the Cr concentration by mass % by mass ratio of Cr to Fe at the separator surface facing the fuel electrode is from 0.7 to 1.3; and the Cr concentration by mass % by mass ratio of Cr to Fe at the separator surface facing the oxidation electrode is less than 0.7.
    • 本发明提供一种具有层叠结构的燃料电池,其特征在于,包括:具有燃料电极,氧化电极和保持在所述燃料电极与所述氧化电极之间的电解质膜的膜电极接合体; 以及将膜电极组件保持在其间的不锈钢隔板。 不锈钢分离器含有Cr和Fe; 在面向燃料电极的隔板表面的Cr与Fe的质量%Cr浓度为0.7〜1.3, 在面向氧化电极的隔板表面的Cr与Fe的质量%Cr浓度小于0.7。