Ion-exchange materials with improved ion conductivity
    1.
    发明授权
    Ion-exchange materials with improved ion conductivity 失效
    具有改善离子电导率的离子交换材料

    公开(公告)号:US06765027B2

    公开(公告)日:2004-07-20

    申请号:US10144663

    申请日:2002-05-13

    IPC分类号: C08J522

    摘要: Ion-exchange materials comprising a polymeric backbone and a plurality of pendent styrenic or fluoridated styrenic macromonomers covalently bonded thereto, wherein the plurality of pendent styrenic or fluorinated styrenic macromonomers comprise a uniform number of styrenic or fluoridated styrenic monomer repeat units, and wherein predominantly all of the styrenic or fluoridated styrenic monomer repeat units have at least one charged group. Processes for making such material, as well as products related thereto, are also disclosed. In a representative embodiment, the ion-exchange material is utilized as a proton-exchange membrane (PEM) for use in a PEM fuel cell.

    摘要翻译: 离子交换材料包含聚合物主链和共价键合到其上的许多悬挂苯乙烯或氟化苯乙烯大分子单体,其中所述多个侧链苯乙烯或氟化苯乙烯类大分子单体包含均匀数目的苯乙烯或氟化苯乙烯单体重复单元,并且其中主要是全部 苯乙烯或氟化苯乙烯单体重复单元具有至少一个带电荷的基团。 还公开了制造这种材料的方法,以及与其有关的产品。 在代表性的实施方案中,离子交换材料用作用于PEM燃料电池的质子交换膜(PEM)。

    BILAYER CATHODE CATALYST STRUCTURE FOR SOLID POLYMER ELECTROLYTE FUEL CELL
    2.
    发明申请
    BILAYER CATHODE CATALYST STRUCTURE FOR SOLID POLYMER ELECTROLYTE FUEL CELL 有权
    固体聚合物电解质燃料电池的双层CATHODE催化剂结构

    公开(公告)号:US20130022891A1

    公开(公告)日:2013-01-24

    申请号:US13550714

    申请日:2012-07-17

    IPC分类号: H01M8/10 H01M8/00

    摘要: Use of noble metal alloy catalysts, such as PtCo, as the cathode catalyst in solid polymer electrolyte fuel cells can provide enhanced performance at low current densities over that obtained from the noble metal itself. Unfortunately, the performance at high current densities has been relatively poor. However, using a specific bilayer cathode construction, in which a noble metal/non-noble metal alloy layer is located adjacent the cathode gas diffusion layer and a noble metal layer is located adjacent the membrane electrolyte, can provide superior performance at all current densities.

    摘要翻译: 使用诸如PtCo的贵金属合金催化剂作为固体聚合物电解质燃料电池中的阴极催化剂可以提供比从贵金属本身获得的低电流密度下更高的性能。 不幸的是,高电流密度下的性能相对较差。 然而,使用其中贵金属/非贵金属合金层位于阴极气体扩散层附近的特定双层阴极结构和与膜电解质相邻的贵金属层,可以在所有电流密度下提供优异的性能。