Fuel cell cathode catalyst
    7.
    发明授权
    Fuel cell cathode catalyst 有权
    燃料电池阴极催化剂

    公开(公告)号:US07419741B2

    公开(公告)日:2008-09-02

    申请号:US10674594

    申请日:2003-09-29

    IPC分类号: H01M4/00

    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.

    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。

    FUEL CELL NANOCATALYST WITH VOLTAGE REVERSAL TOLERANCE
    10.
    发明申请
    FUEL CELL NANOCATALYST WITH VOLTAGE REVERSAL TOLERANCE 有权
    燃料电池与电压反向容差

    公开(公告)号:US20100047668A1

    公开(公告)日:2010-02-25

    申请号:US12546775

    申请日:2009-08-25

    IPC分类号: H01M4/00

    摘要: In some embodiments, the present disclosure provides a fuel cell catalyst having a catalyst surface bearing a non-occluding layer of iridium. In some embodiments, the present disclosure provides a fuel cell catalyst comprising a catalyst surface bearing a sub-monolayer of iridium. In some embodiments, the present disclosure provides a fuel cell catalyst comprising a catalyst surface bearing a layer of iridium having a planar equivalent thickness of between 1 and 100 Angstroms. In some embodiments, the fuel cell catalyst comprises nanostructured elements comprising microstructured support whiskers bearing a thin film of nanoscopic catalyst particles. The layer of iridium typically has a planar equivalent thickness of between 1 and 100 Angstroms and more typically between 5 and 60 Angstroms. The fuel cell catalyst typically comprises no electrically conductive carbon material and typically comprises at least a portion of the iridium in the zero oxidation state.

    摘要翻译: 在一些实施方案中,本公开提供了具有带有非阻挡层铱的催化剂表面的燃料电池催化剂。 在一些实施方案中,本公开提供了一种燃料电池催化剂,其包含具有铱的亚单层的催化剂表面。 在一些实施方案中,本公开内容提供了一种燃料电池催化剂,其包含具有平面当量厚度为1至100埃的铱层的催化剂表面。 在一些实施方案中,燃料电池催化剂包含纳米结构元素,其包含具有纳米级催化剂颗粒薄膜的微结构化支撑晶须。 铱层通常具有1至100埃的平面当量厚度,更典型地在5至60埃之间。 燃料电池催化剂通常不包括导电碳材料,并且通常包含处于零氧化状态的铱的至少一部分。