| abstract |
The polymer electrolyte of the present invention comprises a structural unit represented by the following general formula (1) in weight fraction of 1 to 30% by weight: n n n n n n n n n n (in the formula, A-ring and B-ring each independently represent an optionally-substituted aromatic hydrocarbon ring or an optionally-substituted heterocyclic ring; X 1 and X 2 each independently represent —CO—, —SO— or —SO 2 —; n and m each independently represent 0, 1 or 2, and n+m is not less than 1; when n is 2, two X 1 s may be the same as or different from each other; when m is 2, two X 2 s may be the same as or different from each other; and X represents a direct bond or a divalent group). The polymer electrolyte has excellent water resistance while having high ion-conductivity. |