| 摘要 |
PURPOSE: A polymer electrolyte, its preparation method, a lithium battery employing the polymer electrolyte and its preparation method are provided, to improve the absorption property of an organic electrolyte liquid, thereby enhancing the ion conductivity, the mechanical properties and the binding force to an electrode. CONSTITUTION: The polymer electrolyte comprises a porous polymer membrane(27) comprising a softening agent polymer; and an organic electrolyte liquid(28) which comprises a curing catalyst, a lithium salt and an organic solvent and is prepared by curing reaction of an epoxy resin contained in the pores of the polymer membrane and the curing agent. Preferably the softening agent polymer is at least one thermoplastic polymer selected from the group consisting of polyvinylidene fluoride, vinylidene fluoride-hexafluoropropylene copolymer, poly(vinyl chloride), polysulfone, polymethacrylate, polyolefin, polyethylene oxide, polyurethane, poly(vinyl alcohol) and polyacrylonitrile. |
