| abstract |
A solid electrolyte excellent in shape stability and ion conductivity is industrially efficiently provided. (I) Formula (1): [Wherein, R represents an alkyl group having 1 to 12 carbon atoms, or —CH 2 O (CR 1 R 2 R 3 ). R 1 , R 2 and R 3 are hydrogen atoms or —CH 2 O (CH 2 CH 2 O) n R 4 , and n and R 4 may be different among R 1 , R 2 and R 3. . R 4 is an alkyl group having 1 to 12 carbon atoms, and n is an integer of 0 to 12. And a weight average molecular weight in the range of 10 4 to 10 7 having a repeating unit of 5 to 95 mol% derived from the monomer represented by formula (1) and a repeating unit of 95 to 5 mol% derived from ethylene oxide. A polymer solid electrolyte composition comprising an ether copolymer, (ii) at least one crosslinking aid selected from maleimide compounds, acrylic compounds, and methacrylic compounds, and (iii) a photopolymerization initiator. [Selection figure] None |