BLENDED POLYMER ELECTROLYTE, ELECTROLYTIC MEMBRANE HAVING THE ELECTROLYTE AS MAIN COMPONENT, AND MEMBRANE /ELECTRODE JUNCTION CONTAINING THE ELECTROLYTE

摘要

PROBLEM TO BE SOLVED: To provide a polyelectrolyte superior in ionic conductivity and durability and suitable for a proton exchange membrane or the like of a fuel cell, and provide an electrolyic membrane having the electrolyte as the main component, and a membrane/electrode junction containing the electrolyte. SOLUTION: This is a blended polymer electrolyte composed of a mixture of (a) polybenzoxazole or polybenzthiazole having not less than one kind of groups selected from a sulfonic acid group and its salts or a phosphonic acid group and its salts, and (b) a basic polymer having at least one kind of groups selected from groups composed of a sulfonic acid group and its salts, a phosphonic acid group and its salts, and a carboxylic acid group and its salts.