POLYMER ELECTROLYTE FUEL CELL

摘要

A gas diffusion layer comprising an electro-conductive porous material and 16-55% by weight of fluororesin added thereto is used for at least one of the positive electrode and the negative electrode, whereby the water-retaining property of the inside of the membrane/electrodes assembly is improved without hindering gas diffusion to enable the polymer electrolyte to be moistened with water formed at the positive electrode, and resultantly a polymer electrolyte fuel cell which operates by unhumidified gas is provided.