公开(公告)号：US20070298290A1

公开(公告)日：2007-12-27

申请号：US11888709

申请日：2007-08-02

申请人： Timothy Bekkedahl ,  Lawrence Bregoli ,  Ned Cipollini ,  Timothy Patterson ,  Marianne Pemberton ,  Jonathan Puhalski ,  Carl Reiser ,  Richard Sawyer ,  Margaret Steinbugler ,  Jung Yi

发明人： Timothy Bekkedahl ,  Lawrence Bregoli ,  Ned Cipollini ,  Timothy Patterson ,  Marianne Pemberton ,  Jonathan Puhalski ,  Carl Reiser ,  Richard Sawyer ,  Margaret Steinbugler ,  Jung Yi

IPC分类号： H01M8/04 ,  H01M8/00

CPC分类号： H01M8/04029 ,  H01M8/0243 ,  H01M8/0245 ,  H01M8/0258 ,  H01M8/0267 ,  H01M8/0271 ,  H01M8/04089 ,  H01M8/04097 ,  H01M8/04119 ,  H01M8/04156 ,  H01M8/04291 ,  H01M8/1007 ,  H01M2008/1095 ,  H01M2250/10 ,  Y02B90/14

摘要： A fuel cell power plant (10) includes a fuel cell (12) having a membrane electrode assembly (MEA) (16), disposed between an anode support plate (14) and a cathode support plate (18), the anode and/or cathode support plates include a hydrophilic substrate layer (80, 82) having a predetermined pore size. The pressure of the reactant gas streams (22, 24) is greater than the pressure of the coolant stream (26), such that a greater percentage of the pores within the hydrophilic substrate layer contain reactant gas rather than water. Any water that forms on the cathode side of the MEA will migrate through the cathode support plate and away from the MEA. Controlling the pressure also ensures that the coolant water will continually migrate from the coolant stream toward the anode side of the MEA, thereby preventing the membrane from becoming dry. Proper pore size and a pressure differential between coolant and reactants improves the electrical efficiency of the fuel cell.

摘要翻译： 燃料电池发电厂（10）包括具有设置在阳极支撑板（14）和阴极支撑板（18）之间的膜电极组件（MEA）（16））的燃料电池（12），阳极和/或 阴极支撑板包括具有预定孔径的亲水基底层（80,82）。 反应物气体流（22,24）的压力大于冷却剂流（26）的压力，使得亲水基底层内的较大百分比的孔含有反应物气体而不是水。 在MEA的阴极侧形成的任何水将通过阴极支撑板迁移并远离MEA。 控制压力还可确保冷却水从冷却剂流向MEA的阳极侧连续迁移，从而防止膜变干。 冷却剂和反应物之间适当的孔径和压力差提高了燃料电池的电效率。