Fuel cell catalysts
    3.
    发明公开
    Fuel cell catalysts 失效
    燃料电池催化剂

    公开(公告)号:EP0117290A3

    公开(公告)日:1986-01-22

    申请号:EP83111416

    申请日:1983-11-15

    IPC分类号: H01M08/08 H01M04/92 C25B11/04

    CPC分类号: H01M4/90 C25B11/0494 H01M8/08

    摘要: Fuel cell catalysts which are efficient, long-lived, and refurbishable in-situ include gold carrying a UPD (underpotential deposited) deposit of another element. UPD Ag, Pt, Pd, Ir, Rh, or Tl, Pb, Bi is formed on Au crystallites which are carried on and bonded to the surfaces of substrate carbon particles. The crystallites cause dissociative adsorption of the oxygen molecules so that four electrons are produced per molecule during the reduction reaction which is involved. In an alkaline electrolyte, the catalyst metals such as Pd, lr, Ag, Rh and Ptshow no tendency to poison the counter electrode (counter relative to the other electrode) since each of those metals is a good catalyst for both electrodes. Suitable fuels include methanol (CH 3 OH), formaldehyde (HCHO), and formic acid (HCOOH).

    Process for conditioning a dielectric substrate for plating thereon
    6.
    发明公开
    Process for conditioning a dielectric substrate for plating thereon 失效
    一种用于激活非导电基材的无电解电镀方法。

    公开(公告)号:EP0271837A2

    公开(公告)日:1988-06-22

    申请号:EP87118383.6

    申请日:1987-12-11

    IPC分类号: C23C18/18

    CPC分类号: H05K3/181 C23C18/1893

    摘要: A dielectric substrate is conditioned for plating from an electroless metal plating bath by providing the surface or surfaces of the substrate that are to be plated with semiconductor material whereby the semiconductor material, in the case of n-type material, exhibits energy band where the valence band is equal to or higher than and, in the case of p-type material, exhibits energy band where the valence band is equal to or lower than the redox potential of the metallic ions in the electroless plating bath that are to be deposited as metal on the substrate.

    摘要翻译: 介电基片的条件是通过提供表面或基底的表面由非电解金属镀浴电镀也被与半导体材料被镀从而使半导体材料,n型材料,展品能量带,其中化合价的情况下 带等于或高于,并且在p型材料,展品能量带的情况下,其中的价带比在无电解电镀浴中的金属离子的氧化还原电位等于或低于没有将被沉积为金属 在衬底上。

    Fuel cell catalysts
    7.
    发明公开
    Fuel cell catalysts 失效
    催化剂的燃料电池。

    公开(公告)号:EP0117290A2

    公开(公告)日:1984-09-05

    申请号:EP83111416.0

    申请日:1983-11-15

    IPC分类号: H01M8/08 H01M4/92 C25B11/04

    CPC分类号: H01M4/90 C25B11/0494 H01M8/08

    摘要: Fuel cell catalysts which are efficient, long-lived, and refurbishable in-situ include gold carrying a UPD (underpotential deposited) deposit of another element. UPD Ag, Pt, Pd, Ir, Rh, or Tl, Pb, Bi is formed on Au crystallites which are carried on and bonded to the surfaces of substrate carbon particles. The crystallites cause dissociative adsorption of the oxygen molecules so that four electrons are produced per molecule during the reduction reaction which is involved. In an alkaline electrolyte, the catalyst metals such as Pd, lr, Ag, Rh and Ptshow no tendency to poison the counter electrode (counter relative to the other electrode) since each of those metals is a good catalyst for both electrodes. Suitable fuels include methanol (CH 3 OH), formaldehyde (HCHO), and formic acid (HCOOH).