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    BILAYER CATHODE CATALYST STRUCTURE FOR SOLID POLYMER ELECTROLYTE FUEL CELL
    5.
    发明申请
    BILAYER CATHODE CATALYST STRUCTURE FOR SOLID POLYMER ELECTROLYTE FUEL CELL 有权
    固体聚合物电解质燃料电池的双层CATHODE催化剂结构

    公开(公告)号：US20130022891A1

    公开(公告)日：2013-01-24

    申请号：US13550714

    申请日：2012-07-17

    申请人： Carmen Chuy ,  Scott McDermid ,  Herwig Haas ,  Rajeev Vohra ,  Mike Davis

    发明人： Carmen Chuy ,  Scott McDermid ,  Herwig Haas ,  Rajeev Vohra ,  Mike Davis

    IPC分类号： H01M8/10 ,  H01M8/00

    CPC分类号： H01M4/926 ,  H01M4/921 ,  H01M8/1007

    摘要： Use of noble metal alloy catalysts, such as PtCo, as the cathode catalyst in solid polymer electrolyte fuel cells can provide enhanced performance at low current densities over that obtained from the noble metal itself. Unfortunately, the performance at high current densities has been relatively poor. However, using a specific bilayer cathode construction, in which a noble metal/non-noble metal alloy layer is located adjacent the cathode gas diffusion layer and a noble metal layer is located adjacent the membrane electrolyte, can provide superior performance at all current densities.

    摘要翻译： 使用诸如PtCo的贵金属合金催化剂作为固体聚合物电解质燃料电池中的阴极催化剂可以提供比从贵金属本身获得的低电流密度下更高的性能。 不幸的是，高电流密度下的性能相对较差。 然而，使用其中贵金属/非贵金属合金层位于阴极气体扩散层附近的特定双层阴极结构和与膜电解质相邻的贵金属层，可以在所有电流密度下提供优异的性能。

    METHODS AND APPARATUS FOR IMPROVING THE COLD STARTING CAPABILITY OF A FUEL CELL
    7.
    发明申请
    METHODS AND APPARATUS FOR IMPROVING THE COLD STARTING CAPABILITY OF A FUEL CELL 审中-公开
    改进燃料电池冷启动能力的方法和装置

    公开(公告)号：US20070072016A1

    公开(公告)日：2007-03-29

    申请号：US11533702

    申请日：2006-09-20

    申请人： Jean St-Pierre ,  NengYou Jia ,  Marian Geest ,  Abderrahmane Atbi ,  Herwig Haas

    发明人： Jean St-Pierre ,  NengYou Jia ,  Marian Geest ,  Abderrahmane Atbi ,  Herwig Haas

    IPC分类号： H01M8/00 ,  H01M8/04

    CPC分类号： H01M8/04156 ,  H01M8/0258 ,  H01M8/0267 ,  H01M8/0271 ,  H01M8/04007 ,  H01M8/04089 ,  H01M8/04223 ,  H01M8/04303 ,  H01M8/04328 ,  H01M8/04335 ,  H01M8/04343 ,  H01M8/0435 ,  H01M8/04358 ,  H01M8/04388 ,  H01M8/04395 ,  H01M8/04507 ,  H01M8/04514 ,  H01M8/04559 ,  H01M8/04649 ,  H01M8/04828 ,  H01M8/04955 ,  H01M8/04992 ,  H01M8/1007 ,  H01M8/241 ,  H01M8/2465

    摘要： Apparatus and methods of ceasing operation of an electric power generating system improve the cold starting capability of the system. The system comprises a fuel cell stack connectable to an external circuit for supplying power to the external circuit. The stack comprises at least one solid polymer fuel cell, and the system further comprises a fuel passage for directing a fuel stream through the stack and an oxidant passage for directing an oxidant stream through the stack, a sensor assembly connected to the stack for monitoring a parameter indicative of stack performance, a controller for controlling at least one stack operating parameter, and a control system communicative with the sensor assembly and stack operating parameter controller. The method comprises adjusting at least one stack operating parameter to cause the stack to operate under a drying condition that causes a net outflux of water from the stack, operating the stack under the drying condition until the water content in the stack has been reduced, and interrupting supply of power from the stack to the external circuit.

    摘要翻译： 发电系统停止运转的装置和方法提高了系统的冷启动能力。 该系统包括可连接到用于向外部电路供电的外部电路的燃料电池堆。 所述堆叠包括至少一个固体聚合物燃料电池，并且所述系统还包括用于引导燃料流通过所述堆叠的燃料通道和用于引导氧化剂流通过所述堆的氧化剂通道，连接到所述堆的传感器组件，用于监测 指示堆叠性能的参数，用于控制至少一个堆叠操作参数的控制器以及与传感器组件和堆叠操作参数控制器通信的控制系统。 所述方法包括调整至少一个堆叠操作参数，以使得堆叠在干燥条件下操作，该干燥条件导致来自堆叠的水的净溢出，在干燥条件下操作堆叠，直到堆叠中的水含量已经减少，以及 中断从堆栈向外部电路供电。

    Diagnostic method for an electrochemical fuel cell and fuel cell components
    8.
    发明申请
    Diagnostic method for an electrochemical fuel cell and fuel cell components 审中-公开
    电化学燃料电池和燃料电池组件的诊断方法

    公开(公告)号：US20060051628A1

    公开(公告)日：2006-03-09

    申请号：US10935723

    申请日：2004-09-07

    申请人： Chuey-Yeng Lim ,  Herwig Haas

    发明人： Chuey-Yeng Lim ,  Herwig Haas

    IPC分类号： H01M8/00

    CPC分类号： H01M8/04679 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/0491 ,  H01M8/0494 ,  H01M2008/1095

    摘要： A diagnostic method for an electrochemical fuel cell is described wherein a non-steady state polarization curve is obtained. In particular, a current sweep is applied to, for example, a catalyst coated membrane (CCM), membrane electrode assembly (MEA), fuel cell, plurality of fuel cells and the resulting voltage obtained is recorded. At low current densities, the ramp rate may be relatively slow and relatively fast at higher current densities. The ramp rate may increase in discrete steps or continuously throughout the current sweep. A polarization curve of voltage as a function of current may thus be obtained with the entire current sweep lasting less than 20 seconds and more.

    摘要翻译： 描述了一种用于电化学燃料电池的诊断方法，其中获得非稳态极化曲线。 特别地，将电流扫描施加到例如催化剂涂覆膜（CCM），膜电极组件（MEA），燃料电池，多个燃料电池，并且记录所得到的所得电压。 在低电流密度下，在较高的电流密度下，斜率可能相对较慢并且相对较快。 在整个电流扫描期间，斜率可以以离散步长或连续增加。 因此，可以在整个电流扫描持续时间少于20秒以上的情况下获得作为电流的函数的电压的极化曲线。

    HYDRATION SENSOR APPARATUS FOR MEASURING MEMBRANE HYDRATION IN A FUEL CELL STACK
    10.
    发明申请
    HYDRATION SENSOR APPARATUS FOR MEASURING MEMBRANE HYDRATION IN A FUEL CELL STACK 有权
    用于在燃料电池堆中测量膜层的水力传感器装置

    公开(公告)号：US20070134527A1

    公开(公告)日：2007-06-14

    申请号：US11561243

    申请日：2006-11-17

    申请人： Andrew Desouza ,  Herwig Haas

    发明人： Andrew Desouza ,  Herwig Haas

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04291 ,  H01M8/04089 ,  H01M8/04119 ,  H01M16/003 ,  H01M2008/1095

    摘要： A fuel cell system comprising a fuel cell stack and at least one hydration sensor apparatus for measuring membrane hydration in the fuel cell stack is disclosed. The hydration sensor apparatus comprises (1) an electrically insulated sensor comprising a polymer electrolyte membrane, (2) a power supply, and (3) a load resistor. The sensor, the power supply and the load resistor of the hydration sensor apparatus are electrically connected and the sensor of the hydration sensor apparatus is fluidly connected to the fuel cell stack such that, during operation of the fuel cell system, the polymer electrolyte membrane of the hydration sensor apparatus is exposed to a fuel fluid stream of the fuel cell stack.

    摘要翻译： 公开了一种燃料电池系统，其包括燃料电池堆和用于测量燃料电池堆中的膜水合的至少一个水合传感器装置。 水合传感器装置包括（1）包含聚合物电解质膜的电绝缘传感器，（2）电源和（3）负载电阻器。 水合传感器装置的传感器，电源和负载电阻器电连接，并且水合传感器装置的传感器流体地连接到燃料电池堆，使得在燃料电池系统运行期间，聚合物电解质膜 水合传感器装置暴露于燃料电池堆的燃料流体流。