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    Multiple layer membranes for fuel cells employing direct feed fuels
    1.
    发明授权
    Multiple layer membranes for fuel cells employing direct feed fuels 失效
    用于使用直接进料燃料的燃料电池的多层膜

    公开(公告)号：US5981097A

    公开(公告)日：1999-11-09

    申请号：US987631

    申请日：1997-12-09

    申请人： Govindarajulu Rajendran

    发明人： Govindarajulu Rajendran

    IPC分类号： B32B7/02 ,  B32B27/00 ,  C08J5/22 ,  H01M2/16 ,  H01M4/92 ,  H01M8/02 ,  H01M8/10

    CPC分类号： H01M4/926 ,  B32B27/00 ,  B32B7/02 ,  C08J5/2275 ,  C08J5/2281 ,  H01M2/1653 ,  H01M8/1023 ,  H01M8/1025 ,  H01M8/1039 ,  H01M8/1053 ,  H01M8/1067 ,  C08J2327/12 ,  C08J2327/18 ,  H01M4/92 ,  H01M4/921 ,  H01M8/1004 ,  H01M8/1009

    摘要： A cation exchange membrane having a laminated structure of at least three layers of cation exchange polymer. In a membrane in accordance with the invention, the cation exchange polymer in the laminate has a polymer backbone and cation exchange groups carried on recurring side chains attached to the polymer backbone with the number of carbon atoms in the polymer backbone in relation to the cation exchange groups defining an ion exchange ratio (IXR) for each layer. The layers have differing IXR values which provide one or more high IXR layers and one or more low IXR layers with the IXR of the low IXR layers being less than about 17 and the IXR of the high IXR layers being at least about 15. In a membrane in accordance with the invention, the high and low layers further provide a change in IXR of at least about 2 in at least two locations across the thickness of the membrane.

    摘要翻译： 一种具有至少三层阳离子交换聚合物层压结构的阳离子交换膜。 在根据本发明的膜中，层压体中的阳离子交换聚合物具有聚合物骨架，并且阳离子交换基团承载在连接到聚合物主链上的重复侧链上，聚合物主链中的碳原子数相对于阳离子交换 定义每个层的离子交换比（IXR）的基团。 这些层具有不同的IXR值，其提供一个或多个高IXR层和一个或多个低IXR层，其中低IXR层的IXR小于约17，高IXR层的IXR为至少约15.在 根据本发明的膜，高层和低层进一步在穿过膜的厚度的至少两个位置中提供至少约2的IXR变化。