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    Preparation of acicular cobalt-containing magnetic iron oxide
    77.
    发明授权
    Preparation of acicular cobalt-containing magnetic iron oxide 失效
    针状钴磁性氧化铁的制备

    公开(公告)号：US5484628A

    公开(公告)日：1996-01-16

    申请号：US291559

    申请日：1994-08-16

    申请人： Ekkehard Schwab ,  Ronald J. Veitch ,  Reinhard Korner ,  Emil Pfannebecker ,  Bernd Hoppner

    发明人： Ekkehard Schwab ,  Ronald J. Veitch ,  Reinhard Korner ,  Emil Pfannebecker ,  Bernd Hoppner

    IPC分类号： C01G49/00 ,  C09C1/24 ,  C09C3/06 ,  C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  G11B5/84 ,  H01F1/11 ,  B05D7/00

    CPC分类号： G11B5/70657 ,  C09C1/24 ,  C09C3/063 ,  C01P2004/10 ,  C01P2004/80 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42

    摘要： Acicular cobalt-containing magnetic iron oxides having a high coercive force and a core/shell structure and hence low temperature dependence of the coercive force are prepared by a process in which, in a first stage, surface activation is effected by means of iron(II) and cobalt ions under alkaline conditions on the iron oxide core under an inert gas atmosphere and thereafter, in a second stage, an epitactic coating of cobalt ferrite is applied, which coating is formed oxidatively from iron (II) and cobalt (II) hydroxide, likewise under alkaline reaction conditions. The total amount of cobalt ions used for doping remains unchanged compared with the known doped iron oxides or is even smaller. In the second process stage, the achievable coercive force can be controlled by the proportion of air in the gas mixture during the formation of the epitactic coating.

    摘要翻译： 通过一种方法制备具有高矫顽力和核/壳结构并因此矫顽力的低温依赖性的针状含钴磁性氧化铁，其中在第一阶段中，通过铁（II）进行表面活化 ）和钴离子在碱性条件下在惰性气体气氛下在氧化铁芯上，然后在第二阶段施加钴铁氧体的中空涂层，该涂层由铁（II）和氢氧化钴（II）氧化形成 ，同样在碱性反应条件下。 用于掺杂的钴离子的总量与已知的掺杂的氧化铁相比保持不变，或甚至更小。 在第二工艺阶段，可以通过在形成外延涂层期间气体混合物中的空气比例来控制可实现的矫顽力。

    Catalyst support material comprising polyazole, electrochemical catalyst, and the preparation of a gas diffusion electrode and a membrane-electrode assembly therefrom
    80.
    发明授权
    Catalyst support material comprising polyazole, electrochemical catalyst, and the preparation of a gas diffusion electrode and a membrane-electrode assembly therefrom 有权
    催化剂载体材料包括聚唑，电化学催化剂，以及气体扩散电极和膜 - 电极组合物的制备

    公开(公告)号：US09162220B2

    公开(公告)日：2015-10-20

    申请号：US13278792

    申请日：2011-10-21

    申请人： Ömer Ünsal ,  Sigmar Bräuninger ,  Claudia Querner ,  Ekkehard Schwab

    发明人： Ömer Ünsal ,  Sigmar Bräuninger ,  Claudia Querner ,  Ekkehard Schwab

    IPC分类号： H01M4/86 ,  B01J31/06 ,  H01M8/10 ,  H01M4/88 ,  H01M4/92

    CPC分类号： B01J31/06 ,  H01M4/86 ,  H01M4/8817 ,  H01M4/8842 ,  H01M4/92 ,  H01M8/10 ,  Y02E60/50

    摘要： A process for preparing a catalyst material comprising an electrically conducting support material, a proton-conducting, polyazole-based polymer and a catalytically active material. A catalyst material prepared by the process of the invention. A catalyst ink comprising a catalyst material of the invention and a solvent. A catalyst-coated membrane (CCM) comprising a polymer electrolyte membrane and also catalytically active layers comprising a catalyst material of the present invention. A gas diffusion electrode (GDE) comprising a gas diffusion layer and a catalytically active layer comprising a catalyst material of the invention. A membrane-electrode assembly (MEA) comprising a polymer electrolyte membrane, catalytically active layers comprising a catalyst material of the invention, and gas diffusion layers. And a fuel cell comprising a membrane-electrode assembly of the present invention.

    摘要翻译： 一种制备催化剂材料的方法，其包括导电载体材料，质子传导性聚合物基聚合物和催化活性材料。 通过本发明方法制备的催化剂材料。 一种催化剂油墨，其包含本发明的催化剂材料和溶剂。 包含聚合物电解质膜的催化剂涂覆膜（CCM）以及包含本发明催化剂材料的催化活性层。 包括气体扩散层和包含本发明的催化剂材料的催化活性层的气体扩散电极（GDE）。 包含聚合物电解质膜，包含本发明的催化剂材料的催化活性层和气体扩散层的膜 - 电极组件（MEA）。 以及包括本发明的膜 - 电极组件的燃料电池。