| 摘要 |
PURPOSE: A polymer electrolyte and a lithium battery employing the electrolyte are provided, to improve the ion conductivity of a lithium ion, charge/discharge characteristics, swelling preventing effect and low temperature characteristics by controlling the polymerization reactivity of a multifunctional acryl-based compound. CONSTITUTION: The polymer electrolyte comprises 100 parts by weight of a polyester (meth)acrylate which is such that at least one hydroxyl group of a (polyester)polyol having at least three hydroxyl groups is converted into (meth)acrylate and at least one hydroxyl group is substituted with a group having no radical reactivity, or its polymer; 0.3-5 parts by weight of a peroxide of C6-C40; an organic solvent and a lithium salt; and 0.1-1 parts by weight of a polymerization inhibitor. Preferably the polymerization inhibitor is 1,3,5-trinitrobenzene, p-benzoquinone or their mixture; and the group having no radical reactivity is an aliphatic hydrocarbon group of C1-C20, an aromatic hydrocarbon group of C5-C20, an ether group of C1-C20 or an ester group of C1-C20. |
