Patent ID: 6855178

Claim:
A method for producing a membrane electrode assembly for solid polymer electrolyte fuel cell, said membrane electrode assembly comprising a solid polymer electrolyte membrane composed of an ion exchange membrane, a first electrode having a first catalyst layer, and a second electrode having a second catalyst layer, said first electrode and said second electrode being disposed adjacently to said solid polymer electrolyte membrane and opposed to each other via said solid polymer electrolyte membrane, said method comprising the steps of: a step A of applying a first coating solution containing a catalyst 1 onto a base film to form a first catalyst layer; a step B of applying a coating solution for forming an ion exchange membrane containing an ion exchange resin dissolved or dispersed in a liquid onto said first catalyst layer to form an ion exchange membrane; a step C of applying a second coating solution containing a catalyst 2 onto said ion exchange membrane to form a second catalyst layer; and a step D of peeling off said base film from a laminate comprising said first catalyst layer, said ion exchange membrane and said second catalyst layer formed on said base film via said steps A to C.