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CELL FOR FUEL-CELL BATTERY USING A PROTON EXCHANGE MEMBRANE, WITH GAS DIFFUSION LAYERS OF DIFFERENT RIGIDITY AT THE ANODE AND AT THE CATHODE
CELL FOR FUEL-CELL BATTERY USING A PROTON EXCHANGE MEMBRANE, WITH GAS DIFFUSION LAYERS OF DIFFERENT RIGIDITY AT THE ANODE AND AT THE CATHODE
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机译:使用质子交换膜的燃料电池电池,在阳极和阴极具有不同刚度的气体扩散层
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摘要
A cell structure for a fuel-cell battery, which allows the compromise necessary between the reduction in the non-uniformities of mechanical stress to be optimized, with the aim of obtaining a more uniform operation, and the independent accommodation with respect to the defects in planarity/thickness/alignment, while at the same time meeting the compactness constraint, comprises: a membrane/electrode assembly comprising a first electrode and a second electrode separated by a membrane; a gas diffusion layer stacked on each face of the assembly, between an electrode of the assembly and a current collector plate; and the gas diffusion layers stacked on either side of the assembly do not have the same rigidity, one of the gas diffusion layers having a Young's modulus relative to an applied stress in the direction of the thickness, greater than the Young's modulus of the other layer, in a ratio of the order of at least 100.
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