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    Fuel cell catalyst, process for preparation of the same, and membrane electrode assembly and fuel cell employing the catalyst
    1.
    发明授权
    Fuel cell catalyst, process for preparation of the same, and membrane electrode assembly and fuel cell employing the catalyst 有权
    燃料电池催化剂，其制备方法以及使用催化剂的膜电极组件和燃料电池

    公开(公告)号：US07759277B2

    公开(公告)日：2010-07-20

    申请号：US12407076

    申请日：2009-03-19

    申请人： Taishi Fukazawa ,  Wu Mei ,  Yoshihiko Nakano ,  Tsuyoshi Kobayashi ,  Itsuko Mizutani ,  Hiroyasu Sumino

    发明人： Taishi Fukazawa ,  Wu Mei ,  Yoshihiko Nakano ,  Tsuyoshi Kobayashi ,  Itsuko Mizutani ,  Hiroyasu Sumino

    IPC分类号： B01J21/00 ,  H01M4/00

    CPC分类号： H01M4/8867 ,  H01M4/8605 ,  H01M4/8871 ,  H01M4/8882 ,  H01M4/921 ,  H01M4/926 ,  H01M8/1007 ,  Y02P70/56

    摘要： The present invention provides a catalyst having high activity and excellent stability, a process for preparation of the catalyst, a membrane electrode assembly, and a fuel cell. The catalyst of the present invention comprises an electronically conductive support and catalyst fine particles. The catalyst fine particles are supported on the support and are represented by the formula (1): PtuRuxGeyTz (1). In the formula, u, x, y and z mean 30 to 60 atm %, 20 to 50 atm %, 0.5 to 20 atm % and 0.5 to 40 atm %, respectively. When the element represented by T is Al, Si, Ni, W, Mo, V or C, the content of the T-element's atoms connected with oxygen bonds is not more than four times as large as that of the T-element's atoms connected with metal bonds on the basis of X-ray photoelectron spectrum (XPS) analysis. When the T-element is Ti, Hf, Sn, Ta, Zr or Nb, the content of the T-element's atoms connected with metal bonds is not more than twice as large as that of the T-element's atoms connected with oxygen bonds on the basis of XPS analysis.

    摘要翻译： 本发明提供了具有高活性和优异稳定性的催化剂，制备催化剂的方法，膜电极组件和燃料电池。 本发明的催化剂包括电子导电载体和催化剂细颗粒。 催化剂细颗粒负载在载体上，由式（1）表示：PtuRuxGeyTz（1）。 在该式中，u，x，y和z分别表示30〜60atm％，20〜50atm％，0.5〜20atm％，0.5〜40atm％。 当由T表示的元素是Al，Si，Ni，W，Mo，V或C时，与氧键连接的T元素原子的含量不超过T元素连接原子的含量的四倍 在X射线光电子能谱（XPS）分析的基础上进行金属键合。 当T元素是Ti，Hf，Sn，Ta，Zr或Nb时，与金属键连接的T元素原子的含量不超过与氧键连接的T元素原子的含量的两倍 XPS分析的基础。

    FUEL CELL CATALYST, PROCESS FOR PREPARATION OF THE SAME, AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL EMPLOYING THE CATALYST
    2.
    发明申请
    FUEL CELL CATALYST, PROCESS FOR PREPARATION OF THE SAME, AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL EMPLOYING THE CATALYST 有权
    燃料电池催化剂，其制备方法和膜电极组件和使用催化剂的燃料电池

    公开(公告)号：US20090246589A1

    公开(公告)日：2009-10-01

    申请号：US12407076

    申请日：2009-03-19

    申请人： Taishi FUKAZAWA ,  Wu Mei ,  Yoshihiko Nakano ,  Tsuyoshi Kobayashi ,  Itsuko Mizutani ,  Hiroyasu Sumino

    发明人： Taishi FUKAZAWA ,  Wu Mei ,  Yoshihiko Nakano ,  Tsuyoshi Kobayashi ,  Itsuko Mizutani ,  Hiroyasu Sumino

    IPC分类号： H01M4/86 ,  H01M4/88 ,  B01J37/34

    CPC分类号： H01M4/8867 ,  H01M4/8605 ,  H01M4/8871 ,  H01M4/8882 ,  H01M4/921 ,  H01M4/926 ,  H01M8/1007 ,  Y02P70/56

    摘要： The present invention provides a catalyst having high activity and excellent stability, a process for preparation of the catalyst, a membrane electrode assembly, and a fuel cell. The catalyst of the present invention comprises an electronically conductive support and catalyst fine particles. The catalyst fine particles are supported on the support and are represented by the formula (1): PtuRuxGeyTz (1). In the formula, u, x, y and z mean 30 to 60 atm %, 20 to 50 atm %, 0.5 to 20 atm % and 0.5 to 40 atm %, respectively. When the element represented by T is Al, Si, Ni, W, Mo, V or C, the content of the T-element's atoms connected with oxygen bonds is not more than four times as large as that of the T-element's atoms connected with metal bonds on the basis of X-ray photoelectron spectrum (XPS) analysis. When the T-element is Ti, Hf, Sn, Ta, Zr or Nb, the content of the T-element's atoms connected with metal bonds is not more than twice as large as that of the T-element's atoms connected with oxygen bonds on the basis of XPS analysis.

    摘要翻译： 本发明提供了具有高活性和优异稳定性的催化剂，制备催化剂的方法，膜电极组件和燃料电池。 本发明的催化剂包括电子导电载体和催化剂细颗粒。 催化剂细颗粒负载在载体上，由式（1）表示：PtuRuxGeyTz（1）。 在该式中，u，x，y和z分别表示30〜60atm％，20〜50atm％，0.5〜20atm％，0.5〜40atm％。 当由T表示的元素是Al，Si，Ni，W，Mo，V或C时，与氧键连接的T元素原子的含量不超过T元素连接原子的含量的四倍 在X射线光电子能谱（XPS）分析的基础上进行金属键合。 当T元素是Ti，Hf，Sn，Ta，Zr或Nb时，与金属键连接的T元素原子的含量不超过与氧键连接的T元素原子的含量的两倍 XPS分析的基础。

    PROCESS FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL USING THE MEMBRANE ELECTRODE ASSEMBLY PRODUCED BY THE PROCESS
    8.
    发明申请
    PROCESS FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL USING THE MEMBRANE ELECTRODE ASSEMBLY PRODUCED BY THE PROCESS 有权
    用于生产膜电极组件的方法和使用由该方法生产的膜电极组件的燃料电池

    公开(公告)号：US20090050484A1

    公开(公告)日：2009-02-26

    申请号：US12049770

    申请日：2008-03-17

    申请人： Masaaki YAMAMOTO ,  Wu Mei ,  Tsuyoshi Kobayashi ,  Taishi Fukazawa ,  Itsuko Mizutani ,  Yoshihiko Nakano

    发明人： Masaaki YAMAMOTO ,  Wu Mei ,  Tsuyoshi Kobayashi ,  Taishi Fukazawa ,  Itsuko Mizutani ,  Yoshihiko Nakano

    IPC分类号： C25D1/04 ,  C25D7/00

    CPC分类号： H01M8/1004 ,  C23C14/185 ,  H01M4/8878 ,  H01M4/8882 ,  H01M4/921 ,  H01M8/1011 ,  Y02E60/366 ,  Y02E60/523 ,  Y02P70/56

    摘要： This invention provides a process for producing a membrane electrode assembly which has high and stable catalytic activity, and suppressed deterioration in catalytic activity during operation, and can prevent a deterioration in performance attributable to a structural factor of the membrane electrode assembly. The process comprises the step of, after the washing/removing step, drying the catalyst electrode in an atmosphere having a lower oxygen partial pressure than the air. The anode/cathode is a covered catalyst electrode having a structure formed by supporting/depositing a catalytically active material composed mainly of platinum/ruthenium subjected to the potential holding step, the washing/removing step, and the drying step, on a porous electroconductive carrier to cover at least a part of the porous electroconductive carrier with the ion conductive material.

    摘要翻译： 本发明提供了具有高且稳定的催化活性的电极组件的制造方法，抑制了操作时的催化活性的劣化，能够防止膜电极接合体的结构因素引起的性能的劣化。 该方法包括以下步骤：在洗涤/除去步骤之后，在氧气分压低于空气的气氛中干燥催化剂电极。 阳极/阴极是具有通过在多孔导电载体上负载/沉积主要由经受电位保持步骤的铂/钌，洗涤/去除步骤和干燥步骤的催化活性材料形成的结构的被覆催化剂电极 用离子导电材料覆盖多孔导电载体的至少一部分。