CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL

摘要

Disclosed is a catalyst layer using an electrode catalyst having high oxygen reducing ability, which is useful as a substitute for a platinum catalyst. Also disclosed is a use of such a catalyst layer. Specifically disclosed is a catalyst layer comprising an electrode base and an electrode catalyst formed on the surface of the electrode base and composed of a metal compound which is obtained by hydrolyzing a metal salt or a metal complex.