Flow field assembly for electrochemical fuel cells
    9.
    发明授权
    Flow field assembly for electrochemical fuel cells 失效
    电化学燃料电池的流场组装

    公开(公告)号:US5620807A

    公开(公告)日:1997-04-15

    申请号:US522482

    申请日:1995-08-31

    IPC分类号: H01M4/92 H01M8/10

    摘要: An electrochemical fuel cell having a membrane electrode assembly and a layer of an electrically conductive porous material adjacent thereto which has at least two portions with different mean pore sizes, wherein a first portion of the layer adjacent to the membrane electrode assembly has a porosity no greater than a second portion of the layer adjacent to the opposite side of the layer; the second portion has a porosity of at least about 82 percent; and the second portion has an mean pore size which is at least about 10 microns and at least ten times greater than the mean pore size of the first portion.

    摘要翻译: 一种具有膜电极组件和与其相邻的导电多孔材料层的电化学燃料电池,其具有至少两个具有不同平均孔径的部分,其中与膜电极组件相邻的层的第一部分的孔隙率不大 比层的与相对侧相邻的层的第二部分; 第二部分具有至少约82%的孔隙率; 并且第二部分具有比第一部分的平均孔径大至少约10微米且至少十倍的平均孔径。