PROCESS FOR PRODUCTION OF ELECTRODE CATALYST LAYER, ELECTRODE CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY, AND SOLID POLYMER FUEL CELL

摘要

Disclosed are: a process for producing an electrode catalyst layer having high power generation properties, an electrode catalyst layer, a membrane electrode assembly, and a solid polymer fuel cell, each of which uses an oxide-type non-platinum catalyst as a catalytic substance. Specifically disclosed is a process for producing an electrode catalyst layer for a solid polymer fuel cell, in which a polymeric electrolyte membrane intercalated between a pair of electrode catalyst layers is intercalated between a pair of gas diffusion layers. The electrode catalyst layer is characterized by involving a step of producing a catalytic substance having a surface imparted with electrical conductivity.