Fuel cell cathode catalyst
    6.
    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
    8.
    发明授权
    Fuel cell nanocatalyst with voltage reversal tolerance 有权
    具有电压反转容限的燃料电池纳米催化剂

    公开(公告)号:US08637193B2

    公开(公告)日:2014-01-28

    申请号:US12546775

    申请日:2009-08-25

    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。

    Platinum nickel catalyst alloy
    9.
    发明授权
    Platinum nickel catalyst alloy 有权
    铂镍催化剂合金

    公开(公告)号:US08557484B2

    公开(公告)日:2013-10-15

    申请号:US13643353

    申请日:2011-04-26

    IPC分类号: H01M4/02 H01M4/36 H01M4/92

    CPC分类号: C22C30/00 C22C5/04 C22C19/03

    摘要: A Pt—Ni catalyst is provided which demonstrates an unusually high oxygen reduction mass activity. In some embodiments, the Pt—Ni catalyst is a Pt—Ni binary alloy. In some embodiments, the catalyst may be characterized as having a Pt fcc lattice parameter of less than 3.71 Angstroms or 0.371 nm. In some embodiments the catalyst has a Pt fcc lattice parameter of between 3.69 Angstroms (or 0.369 nm) and 3.73 Angstroms (or 0.373 nm). In some embodiments, the catalyst may be characterized as having a composition of close to PtxNi(1-x), where x is between 0.2 and 0.4. In some embodiments the catalyst comprises nanostructured elements comprising microstructured support whiskers bearing a thin film of nanoscopic catalyst particles comprising a catalyst material described above. The catalyst may be particularly useful as a fuel cell catalyst and more specifically as a fuel cell cathode catalyst.

    摘要翻译: 提供了Pt-Ni催化剂,其表现出异常高的氧还原质量活性。 在一些实施方案中,Pt-Ni催化剂是Pt-Ni二元合金。 在一些实施方案中,催化剂的特征在于具有小于3.71埃或0.371nm的Pt fcc晶格参数。 在一些实施方案中,催化剂具有3.69埃(或0.369nm)和3.73埃(或0.373nm)之间的Pt fcc晶格参数。 在一些实施方案中,催化剂的特征在于具有接近PtxNi(1-x)的组成,其中x在0.2和0.4之间。 在一些实施方案中,催化剂包含纳米结构元素,其包含微结构化支撑晶须,其载有包含上述催化剂材料的纳米级催化剂颗粒的薄膜。 催化剂可以特别用作燃料电池催化剂,更具体地可用作燃料电池阴极催化剂。

    Gas diffusion layer incorporating a gasket
    10.
    发明授权
    Gas diffusion layer incorporating a gasket 有权
    含有垫片的气体扩散层

    公开(公告)号:US07732083B2

    公开(公告)日:2010-06-08

    申请号:US11611553

    申请日:2006-12-15

    IPC分类号: H01M2/08 H01M4/00 H01M4/82

    摘要: A gas diffusion layer incorporating a gasket (GIG) is described along with assemblies incorporating the GIG subassembly. Processes for making the GIG and membrane electrode assemblies (MEAs) incorporating the GIG are also described. A GIG subassembly includes a gas diffusion layer (GDL) and a gasket bonded to the GDL. The gasket includes a first gasket layer and a second gasket layer. The second gasket layer is formed of a gasket material in contact with the first gasket layer and the GDL. The gasket material of the second gasket layer bonds the GDL to the first gasket layer. An adhesive layer, and optionally a removable adhesive liner, is disposed on a surface of the first gasket layer opposite the second gasket layer. In some MEA configurations, the GDL is disposed within an aperture in the first gasket layer.

    摘要翻译: 包含垫圈(GIG)的气体扩散层与并入GIG子组件的组件一起被描述。 还描述了用于制造并入GIG的GIG和膜电极组件(MEA)的工艺。 GIG子组件包括气体扩散层(GDL)和与GDL结合的衬垫。 衬垫包括第一衬垫层和第二衬垫层。 第二衬垫层由与第一衬垫层和GDL接触的衬垫材料形成。 第二衬垫层的衬垫材料将GDL与第一衬垫层结合。 在与第二垫圈层相对的第一衬垫层的表面上设置粘合剂层和任选的可移除的粘合剂衬里。 在一些MEA配置中,GDL设置在第一衬垫层中的孔内。