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    Mitigation of membrane degradation by multilayer electrode
    4.
    发明授权
    Mitigation of membrane degradation by multilayer electrode 有权
    通过多层电极减少膜降解

    公开(公告)号：US08206872B2

    公开(公告)日：2012-06-26

    申请号：US11828895

    申请日：2007-07-26

    申请人： Annette M. Brenner ,  Hubert A. Gasteiger ,  Wenbin Gu ,  James Leistra ,  Brian A. Litteer ,  Han Liu ,  Susan G. Yan ,  Jingxin Zhang

    发明人： Annette M. Brenner ,  Hubert A. Gasteiger ,  Wenbin Gu ,  James Leistra ,  Brian A. Litteer ,  Han Liu ,  Susan G. Yan ,  Jingxin Zhang

    IPC分类号： H01M8/10

    CPC分类号： H01M4/8657 ,  H01M4/8605 ,  H01M4/8642 ,  H01M8/04197 ,  H01M8/1004 ,  H01M2250/20 ,  H01M2300/0082 ,  Y02E60/521 ,  Y02T90/32

    摘要： An MEA for a fuel cell that employs multiple catalyst layers to reduce the hydrogen and/or oxygen partial pressure at the membrane so as to reduce the fluoride release rate from the membrane and reduce membrane degradation. An anode side multi-layer catalyst configuration is positioned at the anode side of the MEA membrane. The anode side multi-layer catalyst configuration includes an anode side under layer positioned against the membrane and including a catalyst, an anode side middle layer positioned against the anode side under layer and not including a catalyst and an anode side catalyst layer positioned against the anode side middle layer and opposite to the anode side under layer and including a catalyst, where the amount of catalyst in the anode side catalyst layer is greater than the amount of catalyst in the anode side under layer.

    摘要翻译： 一种用于燃料电池的MEA，其采用多个催化剂层以降低膜上的氢和/或氧分压，从而降低氟离子的释放速率并降低膜的降解。 阳极侧多层催化剂配置位于MEA膜的阳极侧。 阳极侧多层催化剂构造包括：阳极侧下层，其位于膜的外部并且包括催化剂，阳极侧中间层，其位于阳极侧下层且不包括催化剂;以及阳极侧催化剂层，其位于阳极 并且包括催化剂，其中阳极侧催化剂层中的催化剂的量大于阳极侧下层的催化剂的量。

    Durable membrane electrode assembly catalyst coated diffusion media with no lamination to membrane
    10.
    发明授权
    Durable membrane electrode assembly catalyst coated diffusion media with no lamination to membrane 有权
    耐久的膜电极组件催化剂涂覆的扩散介质，没有层压到膜

    公开(公告)号：US07291419B2

    公开(公告)日：2007-11-06

    申请号：US10763514

    申请日：2004-01-22

    申请人： Susan G. Yan ,  Bhaskar Sompalli ,  John C. Doyle

    发明人： Susan G. Yan ,  Bhaskar Sompalli ,  John C. Doyle

    IPC分类号： H01M8/10

    CPC分类号： H01M4/8605 ,  C25B9/10 ,  H01M4/8807 ,  H01M4/8892 ,  H01M8/1004 ,  H01M2008/1095

    摘要： A technique for fabricating an MEA for a fuel cell that is prepared as a catalyst-coated diffusion media (CCDM). The MEA includes a diffusion media layer having a microporous layer. A catalyst layer is deposited on the microporous layer so that it covers its entire surface. An ionomer layer is sprayed on the catalyst layer. A perfluorinated membrane is sandwiched between one CCDM at the anode side of the MEA and another CCDM at the cathode side of the MEA where the ionomer spray layers face the membrane.

    摘要翻译： 制备作为催化剂涂覆扩散介质（CCDM）的燃料电池的MEA的技术。 MEA包括具有微孔层的扩散介质层。 催化剂层沉积在微孔层上，使其覆盖其整个表面。 将离聚物层喷涂在催化剂层上。 全氟化膜被夹在MEA的阳极侧的一个CCDM和MEA阴极侧的另一个CCDM之间，其中离聚物喷雾层面向膜。