| http://www.w3.org/ns/prov#value | - Moreover, it is preferable that the foregoing solid electrolyte is composed of a random copolymer having the structure of the main chain which includes the structural unit expressed by the following chemical formula 7 and the structural unit expressed by the following chemical formula 8 and the electrolyte salt which is soluble in the random copolymer. where R1 is a group selected from a group con
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