| abstract |
An electrode electrolyte for a polymer electrolyte fuel cell having excellent proton conductivity, dimensional stability, resistance to hot water, and mechanical properties is provided. A polymer-type fuel cell electrode electrolyte comprising a polyarylene-based copolymer having a structural unit represented by the following general formula. [Wherein Y represents —CO— or —SO 2 —, and Z represents an oxygen atom, a sulfur atom, —CO—, —SO 2 — or —SO—. l represents an integer of 0 to 4, and m represents an integer of 0 or more. ] [Selection figure] None |