Patent ID: 7438993

Claim:
An electrolyte for a lithium battery, comprising: a non-aqueous organic solvent; a lithium salt; and an additive having the following Formula 1: wherein, each of X and Y is independently selected from the group consisting of O, S, CR 2 , or NR wherein each R is independently selected from the group consisting of H, halogens, and alkyl groups having a carbon number of less than or equal to 8, and neighboring alkyl groups may be combined to each other to form cyclic or heterocyclic structures, and X and Y are not both oxygen (O), each of R a to R d is independently selected from the group consisting of H, halogens, alkoxy groups having a carbon number of less than or equal to 8, and unsaturated or saturated alkyl groups having a carbon number of less than or equal to 8, and neighboring alkyl groups may be combined to each other to form cyclic or heterocyclic structures, and at least one of R a to R d is a halogen.