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    Fuel cell cathode catalyst
    5.
    发明申请
    Fuel cell cathode catalyst 有权
    燃料电池阴极催化剂

    公开(公告)号：US20050069755A1

    公开(公告)日：2005-03-31

    申请号：US10674594

    申请日：2003-09-29

    申请人： George Vernstrom ,  Radoslav Atanasoski ,  Mark Debe ,  Gregory Haugen ,  Krzysztof Lewinski ,  Andrew Steinbach

    发明人： George Vernstrom ,  Radoslav Atanasoski ,  Mark Debe ,  Gregory Haugen ,  Krzysztof Lewinski ,  Andrew Steinbach

    IPC分类号： B01J23/652 ,  B01J23/656 ,  B01J23/89 ,  B01J35/02 ,  B01J37/34 ,  H01M4/86 ,  H01M4/88 ,  H01M4/92 ,  H01M4/90

    CPC分类号： H01M4/8605 ,  B01J35/026 ,  H01M4/8803 ,  H01M4/8871 ,  H01M4/921

    摘要： A fuel cell cathode catalyst is provided which comprises nanostructured elements comprising microstructured support whiskers bearing nanoscopic catalyst particles. The nanoscopic catalyst particles are made by the alternating application of first and second layers, the first layer comprising platinum and the second layer being an alloy or intimate mixture of iron and a second metal selected from the group consisting of Group VIb metals, Group VIIb metals and Group VIIIb metals other than platinum and iron, where the atomic ratio of iron to the second metal in the second layer is between 0 and 10, where the planar equivalent thickness ratio of the first layer to the second layer is between 0.3 and 5, and wherein the average bilayer planar equivalent thickness of the first and second layers is less than 100 Å. A method of making such nanoscopic catalyst particles comprising the alternate steps of vacuum deposition of platinum and vacuum deposition of an alloy or intimate mixture of iron and a second metal is also provided.

    摘要翻译： 提供了一种燃料电池阴极催化剂，其包括纳米结构元件，其包含具有纳米级催化剂颗粒的微结构化支撑晶须。 纳米级催化剂颗粒通过交替施加第一和第二层制成，第一层包含铂，第二层是铁和选自第VIb族金属，第VIIb族金属的第二金属的合金或紧密混合物 和除了铂和铁之外的第VIIIb族金属，其中第二层中铁与第二金属的原子比在0和10之间，其中第一层与第二层的平面当量厚度比在0.3和5之间， 并且其中所述第一和第二层的平均双层平面等效厚度小于100。 还提供了制造这种纳米级催化剂颗粒的方法，其包括铂的真空沉积的交替步骤和真空沉积合金或铁和第二金属的紧密混合物。