ELECTROLYTE MEMBRANE WITH SUPPORT BASE MATERIAL, MANUFACTURING METHOD THEREOF, AND METHOD OF MANUFACTURING CATALYST LAYER-ELECTROLYTE MEMBRANE LAMINATE USING THE ELECTROLYTE MEMBRANE WITH SUPPORT BASE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an electrolyte membrane with a support base material improved in mass-productivity without impairing quality of the electrolyte membrane.SOLUTION: An electrolyte membrane 7 with a support base material comprises: an electrolyte membrane 2; a first support base material 4 formed on at least one surface of the electrolyte membrane 2; and a second support base material 5 stuck on a surface of the first support base material 4 opposite to the surface stuck with the electrolyte membrane 2. In the first support base material 4, a cut C is formed to divide the first support base material into a first portion including at least a part of an outer edge and a second portion excluding the first portion.