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    Fuel cell catalyst, method of preparing same, and membrane-electrode assembly for fuel cell and fuel cell system including same
    9.
    发明授权
    Fuel cell catalyst, method of preparing same, and membrane-electrode assembly for fuel cell and fuel cell system including same 有权
    燃料电池催化剂及其制备方法以及包含燃料电池的燃料电池系统的膜 - 电极组件和燃料电池系统

    公开(公告)号：US09105936B2

    公开(公告)日：2015-08-11

    申请号：US11936683

    申请日：2007-11-07

    申请人： Myoung-Ki Min ,  Chan-Hee Park ,  Chan Kwak ,  Alexey Alexandrovichserov ,  Go-Ul Choi ,  Geun-Seok Chai

    发明人： Myoung-Ki Min ,  Chan-Hee Park ,  Chan Kwak ,  Alexey Alexandrovichserov ,  Go-Ul Choi ,  Geun-Seok Chai

    IPC分类号： H01M8/10 ,  H01M4/92

    CPC分类号： H01M4/921 ,  H01M4/926 ,  H01M8/1009 ,  H01M2008/1095 ,  Y02E60/50

    摘要： A fuel cell catalyst includes a platinum-iron (Pt—Fe) alloy having an ordered or disordered face-centered cubic structure or face-centered tetragonal structure. The face-centered cubic structure has a lattice constant ranging from about 3.820 Å to about 3.899 Å (or from about 3.862 Å to about 3.880 Å), and the face-centered tetragonal structure has a first lattice constant ranging from about 3.800 Å to about 3.880 Å (or from about 3.810 Å to about 3.870 Å) and a second lattice constant ranging from about 3.700 Å to about 3.810 Å (or from about 3.710 Å to about 3.800 Å). A membrane-electrode assembly can improve cell performance by including the above catalyst having the relatively high activity and selectivity for an oxidant reduction in at least one of an anode or a cathode, and can increase lifespan by inhibiting catalyst poisoning.

    摘要翻译： 燃料电池催化剂包括具有有序或无序的面心立方结构或面心四方结构的铂 - 铁（Pt-Fe）合金。 面心立方结构的晶格常数范围为约3.820至约3.899（或约3.862至约3.880），并且面心四方结构的第一晶格常数范围为约3.800至约 3.880埃（或约3.810埃至约3.870埃）和约3.700至约3.810埃（或约3.710至约3.800埃）的第二晶格常数。 膜 - 电极组件可以通过包括对阳极或阴极中的至少一个氧化剂还原具有相对高的活性和选择性的上述催化剂来改善电池性能，并且可以通过抑制催化剂中毒来增加使用寿命。