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    Method to minimize the impact of shunt currents through aqueous based coolants on PEM fuel cell bipolar plates
    5.
    发明授权
    Method to minimize the impact of shunt currents through aqueous based coolants on PEM fuel cell bipolar plates 有权
    最小化分流电流通过水性冷却剂对PEM燃料电池双极板的影响的方法

    公开(公告)号：US09246178B2

    公开(公告)日：2016-01-26

    申请号：US12194859

    申请日：2008-08-20

    申请人： Mahmoud H. Abd Elhamid ,  Youssef M. Mikhail ,  Gayatri Vyas Dadheech

    发明人： Mahmoud H. Abd Elhamid ,  Youssef M. Mikhail ,  Gayatri Vyas Dadheech

    IPC分类号： H01M8/04 ,  H01M8/02 ,  H01M8/24

    CPC分类号： H01M8/0232 ,  H01M8/0206 ,  H01M8/0228 ,  H01M8/0267 ,  H01M8/04074 ,  H01M8/241 ,  H01M8/2465 ,  Y02E60/50

    摘要： A fuel cell includes a first valve metal flow field plate. The first valve metal flow field plate has a first cooling channel adapted to receive an aqueous coolant and to contact the aqueous coolant at a position that inhibits the formation of shunt currents when the fuel cell is incorporated in a fuel cell stack. A field assembly includes a first metal flow field plate having a first cooling channel adapted to receive an aqueous coolant is also provided. A valve metal plate is disposed over the first metal flow field plate in the flow field assembly. Fuel cell stacks using the valve metal-containing flow field plates are also provided.

    摘要翻译： 燃料电池包括第一阀金属流场板。 第一阀金属流场板具有适于接收水性冷却剂的第一冷却通道，并且当燃料电池被并入在燃料电池堆中时，阻止在形成分流电流的位置处与含水冷却剂接触。 现场组件还包括第一金属流场板，其具有适于接收含水冷却剂的第一冷却通道。 阀门金属板设置在流场组件中的第一金属流场板上。 还提供了使用含阀金属的流场板的燃料电池堆。

    Method to reduce/eliminate shunt current corrosion of wet end plate in PEM fuel cells
    10.
    发明授权
    Method to reduce/eliminate shunt current corrosion of wet end plate in PEM fuel cells 有权
    减少/消除PEM燃料电池中湿端板分流电流腐蚀的方法

    公开(公告)号：US07998631B2

    公开(公告)日：2011-08-16

    申请号：US12401351

    申请日：2009-03-10

    申请人： Mahmoud H. Abd Elhamid ,  Youssef M. Mikhail ,  Gayatri Vyas Dadheech

    发明人： Mahmoud H. Abd Elhamid ,  Youssef M. Mikhail ,  Gayatri Vyas Dadheech

    IPC分类号： H01M8/04 ,  H01M8/24 ,  H01M2/38 ,  H01M2/40

    CPC分类号： H01M8/241 ,  H01M8/0258 ,  H01M8/0267 ,  H01M8/04552 ,  H01M8/04873 ,  H01M2008/1095 ,  H01M2250/00

    摘要： A fuel cell stack includes a first fuel cell assembly and a last fuel cell assembly. The first fuel cell assembly includes a first end plate assembly, which has a first end plate cooling channel adapted to receive a coolant. The last fuel cell assembly includes a last end plate assembly that has a last end plate cooling channel. A first electrical potential exists between the first end plate and the last end plate. The fuel cell stack also includes a connecting cooling channel is in fluid communication with the first end plate cooling channel and the last end plate cooling channel. A coolant is contained within the connecting coolant channel, the first end plate cooling channel, and a last end plate cooling channel. The fuel cell stack further includes a coolant electrode positioned in the coolant channel, which contacts the coolant. A voltage source is in communication with the first end plate and the coolant electrode such that a second electrical potential between the coolant electrode and the first end plate is at a sufficient voltage to impede corrosion of the first end plate.

    摘要翻译： 燃料电池堆包括第一燃料电池组件和最后一个燃料电池组件。 第一燃料电池组件包括第一端板组件，其具有适于接收冷却剂的第一端板冷却通道。 最后一个燃料电池组件包括具有最后端板冷却通道的最后端板组件。 在第一端板和最后端板之间存在第一电势。 燃料电池堆还包括连接冷却通道与第一端板冷却通道和最后端板冷却通道流体连通。 冷却剂被容纳在连接冷却剂通道，第一端板冷却通道和最后端板冷却通道内。 燃料电池堆还包括位于冷却剂通道中的与冷却剂接触的冷却剂电极。 电压源与第一端板和冷却剂电极连通，使得冷却剂电极和第一端板之间的第二电位处于足够的电压以阻止第一端板的腐蚀。