Patent ID: 7914928

Claim:
An electrolyte for a lithium battery, comprising: a non-aqueous organic solvent; a lithium salt; and an additive comprising a) a compound represented by the following Formula (1), and b) a compound selected from the group consisting of a sulfone-based compound, a poly(ester)(meth)acrylate, a polymer of a poly(ester)(meth)acrylate, and a mixture thereof: wherein R 1 is a C 1 to C 10 alkyl, a C 1 to C 10 alkoxy, or a C 6 to C 10 aryl, X is halogen, and m and n are integers ranging from 1 to 5, where m+n is less than or equal to 6, and wherein the poly(ester)(meth)acrylate is a polymer derived from a (polyester)polyol with at least three hydroxyl (—OH) groups, where a portion of or the whole of the hydroxyl groups is substituted with a (meth)acrylic ester and the remaining portion of the hydroxyl group that is unsubstituted with the (meth)acrylic ester is substituted with a group having no radical reactivity.