Membrane electrode assembly
AssigneeHonda Motor Co., Ltd.
InventorsTakao FUKUMIZU, Hiroshi MATSUMORI, Takuma YAMAWAKI, Yoichi ASANO, Mihoko KAWAHARADA
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Abstract
A membrane electrode assembly includes a solid polymer electrolyte membrane sandwiched between a pair of electrodes. Each of the electrodes has an electrode catalyst layer and a gas diffusion layer, the electrode catalyst layer facing the electrolyte membrane. A porous layer having a thickness of 5 to 40 μm and a seepage pressure of 10 to 60 kPa is interposed between the electrode catalyst layer and the gas diffusion layer. The porous layers preferably have a spring constant of 100 to 1000 GPa/m. The membrane electrode assembly may be devoid of any one of the porous layers.
Claims4
A membrane electrode assembly comprising a solid polymer electrolyte membrane sandwiched between a pair of electrodes, wherein
- each of the electrodes contains an electrode catalyst layer and a gas diffusion layer, the electrode catalyst layer facing the electrolyte membrane, and
- at least one of the electrodes further contains a porous layer having a thickness of 5 to 40 μm and a seepage pressure of 10 to 60 kPa, interposed between the electrode catalyst layer and the gas diffusion layer.
Dependencies are inferred from the claim text.