| 摘要 |
A polymer electrolyte membrane obtained by molding a composition and subjecting the resulting composition to crosslinking, the composition containing a block copolymer (Z), a compound (X), and a compound (Y). The block copolymer (Z) contains a polymer block (A), which comprises structural units derived from an aromatic vinyl compound and has an ion-conductive group, and an amorphous polymer block (B), which comprises structural units derived from an unsaturated aliphatic hydrocarbon and does not have an ion-conductive group. The compound (X) has, in the molecule, two or more aromatic rings in which one or more hydrogens are substituted with a hydroxyl group, and has a structure in which adjacent aromatic rings are bonded via a C1-3 carbon chain containing at least one methylene group. The compound (Y) is represented by general formula (1). (In the formula, R1 represents a hydrogen or C1-2 alkyl group, and R2, R3, R4, R5, R6, and R7 independently represent a hydrogen, hydroxyl group, C1-4 alkyl group, or C1-4 alkoxy group.) |
