Patent ID: 8460836

Claim:
A cathode for a fuel cell, which includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane, wherein the catalyst layer of the cathode has two portions with different water-repelling properties, and a portion of the catalyst layer that does not face a channel has a higher water-repelling property than a portion that faces a channel, wherein the portion of the catalyst layer, which faces a channel, includes a metal catalyst or a metal catalyst on a carbon-based support, and a polymer ionomer, and wherein the portion of the catalyst layer, which does not face a channel, includes a metal catalyst or a metal catalyst on a carbon-based support; a polymer ionomer; and a hydrophobic polymer-based water-repelling enhancer selected from the group consisting of polytetrafluoroethylene, polychlorotrifluoroethylene, and fluorinated ethylene propylene copolymer.