| 摘要 |
Provided is a solid polymer electrolyte having increased heat resistance and high proton conductivity and a proton conductive membrane composed of the electrolyte. Also provided is a copolymer having a sulfonic acid group. The copolymer includes a repeating unit represented by Formula (1):
(in the formula, Y denotes at least one kind of structure selected from the group consisting of -CO-, -SO 2 -, -SO-, - CONH-, -COO-, -(CF 2 ) 1 - (1 is an integer of 1 to 10), and - C(CF 3 ) 2 -; W denotes at least one kind of structure selected from the group consisting of a direct bond, -CO-, -SO 2 -, -SO-, -CONH-, -COO-, -(CF 2 ) 1 - (l is an integer of 1 to 10), - C(CF 3 ) 2 -, -O-, and -S-; Z denotes a direct bond or at least one kind of structure selected from the group consisting of - (CH 2 ) 1 - (1 is an integer of 1 to 10), -C(CH 3 ) 2 -, -O-, -S-, - CO-, and -SO 2 -; R 30 denotes a nitrogen-containing aromatic ring having a substituent represented by -SO 3 H, -O(CH 2 ) h SO 3 H, or -O(CF 2 ) h SO 3 H (h is an integer of 1 to 12); p is an integer of 0 to 10; q is an integer of 0 to 10; r is an integer of 1 to 5; and k is an integer of 0 to 4). |
