| 摘要 |
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: (in the formula, A-ring and B-ring each independently represent an optionally-substituted aromatic hydrocarbon ring or an optionally-substituted heterocyclic ring; X1 and X2 each independently represent —CO—, —SO— or —SO2—; n and m each independently represent 0, 1 or 2, and n+m is not less than 1; when n is 2, two X1s may be the same as or different from each other; when m is 2, two X2s 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.
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