| 摘要 |
To provide an electrolyte material having high electrical conductivity (ion exchange capacity) and a high softening temperature. An electrolyte material comprising a copolymer containing repeating units represented by the following formula (1) and repeating units represented by the following formula (2): wherein R<SUP>F </SUP>is a fluorine atom or the like, each of X<SUP>1 </SUP>and X<SUP>2 </SUP>is a fluorine atom or a trifluoromethyl group, m is from 2 to 4, and Y is a hydroxyl group or the like.
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