Patent ID: 7785752

Claim:
A fuel cell electrode comprising: a catalyst layer; a gas diffusion layer; and a water-repellent layer interposed between said catalyst layer and said gas diffusion layer, an average thickness of the water-repellent layer being 10 to 50 μm, wherein said water-repellent layer has a uniform thickness, one surface of said water-repellent layer being bonded to said catalyst layer, and the other surface of said water-repellent layer facing said gas diffusion layer, and said catalyst layer and said water-repellent layer are in intimate contact with each other and have substantially no interstice therebetween, wherein a difference between a maximum thickness and a minimum thickness of the water-repellent layer is not great than 24% of an average thickness of the water-repellent layer, wherein, at an interface of the catalyst layer and the water-repellent layer in a cross-section, a sum of lengths of interface portions which have a distance between the catalyst laver and the water-repellent layer of 5 μm or greater is 0.1 mm or less per 1 mm of the interface, and wherein said water-repellent layer comprises a water-repellent material and an electron conductive material.