Electrochemical cell having an oxide growth resistant current distributor
    3.
    发明授权
    Electrochemical cell having an oxide growth resistant current distributor 失效
    具有氧化物生长阻力电流分布器的电化学电池

    公开(公告)号:US5622609A

    公开(公告)日:1997-04-22

    申请号:US432403

    申请日:1995-05-01

    摘要: The invention relates to an electrochemical cell which has an electrode, which may be either an anode or a cathode, and a membrane disposed in contact with one side of the electrode. An anode current bus is disposed on the other side of the anode, and a cathode current bus is disposed on the other side of the cathode. An anode current distributor collects current from an anode current bus and distributes it to the anode by electronic conduction, and a cathode current distributor collects current from the cathode and distributes it to the cathode bus by electronic conduction. The anode or the cathode current distributor is made of a metal which is treated by either nitriding, boriding or carbiding the metal in order to make the metal oxide growth resistant. Alternatively, the current distributor on the cathode side may be made of a nickel-based alloy. The current distributor thus provides a barrier between the current bus and the electrode, and the anolyte, catholyte and products of the cell. This is especially important in aggressive environments, such as hydrogen chloride. Thus, the cell of the present invention is particularly useful in converting anhydrous hydrogen halide directly to essentially dry halogen gas, such as anhydrous hydrogen chloride to chlorine gas, or for converting aqueous hydrogen chloride to wet chlorine gas.

    摘要翻译: 本发明涉及一种电化学电池,其具有可以是阳极或阴极的电极和与电极的一侧接触的膜。 阳极电流总线设置在阳极的另一侧,阴极电流总线设置在阴极的另一侧。 阳极电流分配器从阳极电流总线收集电流并通过电子导通将其分配到阳极,并且阴极电流分配器从阴极收集电流并通过电子导通将其分配到阴极总线。 阳极或阴极电流分配器由金属制成,其通过氮化,硼化或碳化金属处理,以使金属氧化物生长抗性。 或者,阴极侧的电流分配器可以由镍基合金制成。 因此,电流分配器在电流母线和电极之间提供阻挡层,以及电池的阳极电解液,阴极电解液和产物。 这在腐蚀性环境中尤其重要,如氯化氢。 因此,本发明的电池特别可用于将无水卤化氢直接转化为基本上干燥的卤素气体,例如无水氯化氢至氯气,或将氯化氢水溶液转化为湿氯气。