| 摘要 |
An object of the present invention is to provide a method that is applicable to the production of a polymer electrolyte having high ion-exchange capacity, uniform crosslinking points and improve ionic conductivity, unlike conventional methods. A method for synthesizing a polymer electrolyte comprises: 1st step of maintaining a polymer having sulfonic acid groups and sulfonyl halide groups within the molecule at 0° C. or less in the presence of a base; and 2nd step of carrying out a crosslinking reaction between the polymer prepared in the 1st step and a cross-linking agent having one or more types of functional group selected from the group consisting of a disulfonyl amide group, a diamine group, a diol group and a dithiol group in an organic solvent.
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