| 摘要 |
A polymer electrolyte prepared by impregnating a vinylidene copolymer with a nonaqueous electrolyte, the copolymer comprising 35-99 mole %, particularly 75-95 mole %, of repeating units derived from vinylidene fluoride, 1-50 mole %, particularly 5-25 mole %, of repeating units derived from tetrafluoroethylene, and 0-10 mole % of a monomer copolymerizable therewith, and the copolymer having a melting point of 80 DEG C or higher, particularly 100 DEG C or higher, a crystallinity of 20-80%, particularly 20-50%, and a molecular weight of 50,000-500,000 (NMP solvent, calculated as polystylene). |
