FUEL CELL MEMBRANE-ELECTRODE ASSEMBLY AND PRODUCTION METHOD THEREFOR

摘要

A fuel cell membrane-electrode assembly having a fuel electrode (4a) and an oxidant electrode (4b) has a non-supported-catalyst containing catalyst layer (2) that contains a metal catalyst nanoparticle (8) of 0.3 nm to 100 nm in primary particle diameter that is not supported on a support, and an electrochemically active surface area of the metal catalyst nanoparticle (8) is 10 m²/g to 150 m²/g, and a layer thickness of the non-supported-catalyst containing catalyst layer (2) is less than or equal to 10 µm.