Method to retard catalyst recrystallization
    3.
    发明授权
    Method to retard catalyst recrystallization 失效
    延迟催化剂重结晶的方法

    公开(公告)号:US4937220A

    公开(公告)日:1990-06-26

    申请号:US230385

    申请日:1988-08-08

    IPC分类号: B01J23/64 H01M4/86 H01M4/92

    摘要: The rate of noble metal crystallite recrystallization on a carbon-supported noble metal catalyst is reduced by dispersing two or more different kinds of noble metal-containing crystallites onto the surface of the carbon support. The crystallites have either different unit cell configurations or different unit cell sizes. The reduced rate of noble metal crystallite recrystallization results, over a period of time, in higher crystallite surface area and therefore, better catalyst performance compared to conventional carbon-supported noble metal catalysts. Fuel cells which incorporate such improved catalysts as cathode catalysts are capable of operating at maximum power production for longer periods of time than fuel cells which use conventional catalysts as cathode catalysts.

    摘要翻译: 通过将两种或更多种不同种类的含贵金属的微晶分散在碳载体的表面上,可以降低在碳负载的贵金属催化剂上贵金属微晶重结晶的速率。 微晶具有不同的晶胞结构或不同的晶胞尺寸。 在一段时间内,贵金属微晶重结晶速率降低导致较高的微晶表面积,因此与传统的碳负载型贵金属催化剂相比,催化剂性能更好。 结合这种改进的催化剂作为阴极催化剂的燃料电池能够比使用常规催化剂作为阴极催化剂的燃料电池更长时间地进行最大功率生产。

    Electrochemical cell
    5.
    发明授权
    Electrochemical cell 失效
    电化学电池

    公开(公告)号:US3945844A

    公开(公告)日:1976-03-23

    申请号:US172655

    申请日:1971-08-18

    IPC分类号: H01M8/04 H01M8/02 H01M2/00

    CPC分类号: H01M8/04074

    摘要: An electrochemical cell comprising an anode, a cathode, and an electrolyte in combination with support or coolant plates fabricated from a polymer/metal composite, such as polysulfone/nickel, is described. The plates are relatively inexpensive, easily fabricated, have good thermal conductivity, low electrical resistance, and good structural stability.

    摘要翻译: 描述了包括阳极,阴极和电解质以及由聚合物/金属复合物如聚砜/镍制成的支撑体或冷却剂板的电化学电池。 这些板相对便宜,易于制造,具有良好的导热性,低电阻和良好的结构稳定性。

    Method of making electrical discharge machining electrodes
    7.
    发明授权
    Method of making electrical discharge machining electrodes 失效
    放电加工电极的制作方法

    公开(公告)号:US4808354A

    公开(公告)日:1989-02-28

    申请号:US64358

    申请日:1987-06-22

    CPC分类号: C04B35/52 C04B35/532

    摘要: A method for fabricating electrical discharge machining electrodes includes forming a thin electrode shell by compression molding a mixture of carbon particles and an organic binder. The electrode shell is then thermally processed to graphitize the organic binder and carbon producing an electrode with the structural integrity needed so as to be useful in electrical discharge machining.

    摘要翻译: 一种制造放电加工电极的方法包括通过压缩模制碳颗粒和有机粘合剂的混合物来形成薄电极壳。 然后对电极壳进行热处理以对有机粘合剂和碳进行石墨化,产生具有所需结构完整性的电极,从而可用于放电加工。

    Molten carbonate fuel cell separator
    9.
    发明授权
    Molten carbonate fuel cell separator 失效
    熔融碳酸盐燃料电池分离器

    公开(公告)号:US4609595A

    公开(公告)日:1986-09-02

    申请号:US661850

    申请日:1984-10-17

    摘要: In a stacked array of molten carbonate fuel cells, a fuel cell separator is positioned between adjacent fuel cells to provide isolation as well as a conductive path therebetween. The center portion of the fuel cell separator includes a generally rectangular, flat, electrical conductor. Around the periphery of the flat portion of the separator are positioned a plurality of elongated resilient flanges which form a gas-tight seal around the edges of the fuel cell. With one elongated flange resiliently engaging a respective edge of the center portion of the separator, the sealing flanges, which are preferably comprised of a noncorrosive material such as an alloy of yttrium, iron, aluminum or chromium, form a tight-fitting wet seal for confining the corrosive elements of the fuel cell therein. This arrangement permits a good conductive material which may be highly subject to corrosion and dissolution to be used in combination with a corrosion-resistant material in the fuel cell separator of a molten carbonate fuel cell for improved fuel cell conductivity and a gas-tight wet seal.

    摘要翻译: 在熔融碳酸盐燃料电池的堆叠阵列中,燃料电池分离器位于相邻的燃料电池之间,以提供隔离以及它们之间的导电路径。 燃料电池分离器的中心部分包​​括大致矩形的扁平电导体。 围绕隔板的平坦部分的周边设置有多个细长的弹性凸缘,其围绕燃料电池的边缘形成气密密封。 通过一个细长的凸缘弹性地接合分离器的中心部分的相应边缘,优选地由诸如钇,铁,铝或铬的合金的非腐蚀性材料组成的密封凸缘形成紧密的湿密封件 将燃料电池的腐蚀元件限制在其中。 这种布置允许可能高度受到腐蚀和溶解的良好导电材料与熔融碳酸盐燃料电池的燃料电池隔板中的耐腐蚀材料组合使用,以改善燃料电池导电性和气密湿密封 。

    Corrosion protection for a fuel cell coolant system
    10.
    发明授权
    Corrosion protection for a fuel cell coolant system 失效
    燃料电池冷却系统的防腐蚀

    公开(公告)号:US3940285A

    公开(公告)日:1976-02-24

    申请号:US532565

    申请日:1974-12-13

    IPC分类号: H01M8/04

    CPC分类号: H01M8/04029

    摘要: The internal coolant system of a fuel cell power plant utilizes a gas in the coolant fluid to inhibit the corrosion of those fuel cell components that corrode due to shunt currents flowing through the coolant fluid. In a preferred embodiment hydrogen gas is used.

    摘要翻译: 燃料电池发电厂的内部冷却剂系统利用冷却剂流体中的气体来抑制由于流过冷却剂流体的分流电流而腐蚀的那些燃料电池部件的腐蚀。 在优选的实施方案中,使用氢气。