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    • 48. 发明申请
    • WETTABLE GAS DIFFUSION LAYER FOR A WET SEAL IN A FUEL CELL
    • 可湿性气体扩散层,用于在燃料电池中密封
    • WO2008088310A1
    • 2008-07-24
    • PCT/US2006/049343
    • 2006-12-27
    • UTC POWER CORPORATIONBADRINARAYANAN, Paravastu
    • BADRINARAYANAN, Paravastu
    • H01M8/00
    • H01M8/0267H01M8/0234H01M8/0243H01M8/0258H01M8/026H01M8/0265H01M8/0276H01M8/241
    • An example fuel cell stack (10, 40) includes a cathode plate (60) having oxidant flow passages (62) and coolant flow passages (64), and a porous anode plate (42) adjacent the coolant flow passages (64). The porous anode plate (42) includes fuel flow passages (46) and a network of pores (44) that fluidly connect the fuel flow passages (46) and the coolant flow passages (64). A membrane electrode arrangement (50) adjacent the fuel flow passages (46) generates electricity in a fuel cell reaction. A hydrophilic gas diffusion layer (48) between the membrane electrode arrangement (50) and the porous anode plate (42) distributes water from the coolant flow passages (64) to maintain or establish a wet seal (70) within the network of pores (44) that limits fuel transport through the network of pores (44) from the fuel flow passages (46) to the coolant flow passages (64).
    • 示例性燃料电池堆(10,40)包括具有氧化剂流动通道(62)和冷却剂流动通道(64)的阴极板(60)和邻近冷却剂流动通道(64)的多孔阳极板(42)。 多孔阳极板(42)包括燃料流动通道(46)和流体连接燃料流动通道(46)和冷却剂流动通道(64)的孔(44)网络。 邻近燃料流动通道(46)的膜电极装置(50)在燃料电池反应中产生电力。 在膜电极装置(50)和多孔阳极板(42)之间的亲水性气体扩散层(48)从冷却剂流动通道(64)分配水以保持或建立在孔网络内的湿密封(70) 44)限制从燃料流动通道(46)到冷却剂流动通道(64)的通过孔(44)的网络的燃料传输。