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    • 7. 发明申请
    • CONTROL DEVICE FOR AVOIDING ELECTROCHEMICAL CORROSION ON SUPPORTED FUEL CELL ELECTRODES
    • 控制装置支持的燃料电池电极的避电化学腐蚀
    • WO2008135162A3
    • 2008-12-31
    • PCT/EP2008003238
    • 2008-04-23
    • DAIMLER AGFINSTERWALDER FLORIANFRANK GEORGMAASS SEBASTIAN
    • FINSTERWALDER FLORIANFRANK GEORGMAASS SEBASTIAN
    • H01M8/04
    • H01M8/0488H01M8/0234H01M8/04089H01M8/04223H01M8/04238H01M8/04753H01M8/04798H01M16/006H01M2008/1095H01M2250/20Y02T90/32
    • The invention relates to a fuel cell system comprising at least one fuel cell for generating electrical energy based on an electrochemical reaction of an oxidant which contains oxygen as the essential component, and a fuel which mainly contains hydrogen. Said system comprises a control device for controlling the operating state of fuel cells. The invention is characterized in that at least one fuel cell electrode comprises a carbonaceous catalyst support that is charged with a catalyst material, especially platinum. The operating range of one or more fuel cells of the fuel cell system is restricted by substantially limiting it to a range between approximately 0.2 V and 0.9 V. As a result, the corrosion rates for the electrodes are distinctly reduced and their life and efficiency is increased or maintained. Preferably, additional measures are taken to limit the dynamics of the voltage states of a fuel cell within the predetermined operating range and to thereby reduce the corrosion of the carbon support due to defects on the carbon support.
    • 本发明涉及一种燃料电池系统,具有用于基于氧化剂,其含有作为必要成分是氧气的电化学反应电能至少一个燃料电池,和主要含有氢的燃料。 它包括一个控制装置,用于控制所述燃料电池的运行状态。 根据本发明的具有带的催化剂材料,特别是铂,占用含碳的催化剂载体的至少一个燃料电池用电极。 根据本发明,燃料电池系统的一个或多个燃料电池的操作范围通过被基本上限制于范围为约0.2 V和0.9 V.之间限制 这使得它,这显著减少电极的腐蚀率,从而提高零件的耐久性,而另一方面的性能,并获得成功。 优选地,采取措施另外,以限制在预定的操作范围内的燃料电池的电压状态的动力学,从而减少了由于在碳载体上的缺陷的碳载体的腐蚀。