| 초록 |
The fluorene and biphenyl-based branched copolymer polymer electrolyte membrane(F1B-SA-n) was synthesized by synthesizing a branched polymer precursor consisting only of carbon-carbon bonds through an electrophilic substitution reaction under strong acid conditions, and then grafting a sulfonic acid group at the end of the side chain. In the case of chemcial stability, F1B-SA-n showed higher chemical stability than SPAES-50 because it consisted only of C-C bonds. Since the ion exchange functional group is introduced at the end of the side chain, it has high proton conductivity and high physical stability under high humidity condtions, and the proton conductivity measured in water is higher than that of Nafion212. |
