Composition for electrolyte membrane, solid polymer electrolyte membrane, method for producing the electrolyte membrane, membrane-electrode assembly, polymer electrolyte fuel cell, water electrolysis cell, and water electrolysis device

摘要

A compound (A) having an ion exchange group and a group (B ′) represented by the following formula (B ′), having a number average molecular weight of 500 or more and being soluble in an organic solvent ( A composition for an electrolyte membrane, comprising B1). (In the formula, ring A and ring B each independently represent a group having a cyclic structure, and RI and RII each independently represent a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group having 1 to 12 carbon atoms, A 1-12 alkylthio group or a C1-C12 aryl group, L represents a direct bond, an oxygen atom or a sulfur atom, and aI and aII each independently represent an integer of 0-6.)