Fuel cell and fuel cell stack
    8.
    发明授权
    Fuel cell and fuel cell stack 有权
    燃料电池和燃料电池堆

    公开(公告)号:US08153288B2

    公开(公告)日:2012-04-10

    申请号:US11089877

    申请日:2005-03-24

    IPC分类号: H01M8/02 H01M4/86

    摘要: A fuel cell is formed by stacking a membrane electrode assembly and separators alternately. Each of the separators includes first and second metal plates. A coolant flow field is formed between the first metal plate of the fuel cell and the second metal plate of the adjacent fuel cell. A folded section is provided around a coolant supply passage by folding the second metal plate. The folded section forms an inlet which enlarges the sectional area of an opening as a fluid passage between the coolant supply passage and the coolant flow field.

    摘要翻译: 通过交替地堆叠膜电极组件和隔板来形成燃料电池。 每个分离器包括第一和第二金属板。 在燃料电池的第一金属板和相邻燃料电池的第二金属板之间形成冷却剂流场。 折叠部分通过折叠第二金属板设置在冷却剂供给通道周围。 折叠部分形成入口,其扩大开口的截面积,作为冷却剂供应通道和冷却剂流场之间的流体通道。

    Method of surface treatment for stainless steel product for fuel cell
    10.
    发明授权
    Method of surface treatment for stainless steel product for fuel cell 失效
    燃料电池不锈钢产品表面处理方法

    公开(公告)号:US06884363B2

    公开(公告)日:2005-04-26

    申请号:US10169791

    申请日:2001-11-06

    摘要: A method for treating the surface of a stainless steel product for a fuel cell containing, in wt %, 0.15% or less of C, 17 to 36% of Cr, 0.005 to 3.5% of B, which comprises the first step of forming in advance a passive film with an oxidizing acid on the surface of the stainless steel product, the second step of allowing an aqueous acid solution to corrode the passive film, to thereby project one or more of a M23C6 type carbide, a M23(C, B)6 type borocarbide and M2B type boride, which are inclusions having good electroconductivity, the third step of forming a passive coating film with an oxidizing acid on the surface of the steel product except that of the inclusion above projected, and the fourth step of washing with water and drying. The method of treatment allows, without the use of a method requiring a high cost such as gold plating, the improvement in the contact resistance of the stainless steel product for a fuel cell, which results in the retention of excellent characteristics of a stainless steel product over a long period of time.

    摘要翻译: 一种用于处理燃料电池的不锈钢产品的表面的方法,所述燃料电池含有以重量%计含量为0.15%或更少的C,17至36%的Cr,0.005至3.5%的B,其包括第一步形成 在不锈钢产品的表面上推进具有氧化酸的钝化膜,第二步是使酸性水溶液腐蚀钝化膜,从而投入一个或多个M 23 C 类型碳化物,M 23(C,B)6碳化硼和M 2 B型硼化物, 其是具有良好导电性的夹杂物,除了上述夹杂物以外,在钢制品的表面上形成具有氧化性酸的钝化涂膜的第三步骤,以及用水洗涤和干燥的第四步骤。 该处理方法不需要使用诸如镀金等高成本的方法,能够提高燃料电池用不锈钢制品的接触电阻,从而保持不锈钢制品的优异特性 在很长一段时间内。