An electrolyte for a lithium battery includes 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)(metha)acrylate, a polymer of poly(ester)(metha)acrylate, and a mixture thereof: wherein R1 is a C1 to C10 alkyl, a C1 to C10 alkoxy, or a C6 to C10 aryl, and preferably a methyl, ethyl, or methoxy, X is a halogen, and m and n are integers ranging from 1 to 5, where m+n is less than or equal to 6.