転写箔フィルム及びそれを用いて得られるマスク付き固体高分子電解質膜、転写箔フィルム付き固体高分子電解質膜、マスク付き触媒転写フィルム、触媒層−電解質膜積層体、及び固体高分子形燃料電池の製造方法

摘要

PROBLEM TO BE SOLVED: To provide a transfer foil film capable of forming a mask for forming a catalyst layer in positions opposing both sides of an electrolyte membrane without damaging the electrolyte membrane.SOLUTION: A transfer foil film is used when a catalyst layer for a solid polymer electrolyte fuel cell is formed as a pattern on a solid polymer electrolyte membrane, where the transfer foil film is composed of a mask forming layer comprising a release layer and a base material film. The mask forming layer is formed as the pattern on the base material film.