Patent ID: 7745055

Claim:
An electrolyte for a rechargeable lithium battery, comprising: a first additive having an oxidation potential from 4.1 to 4.6V, wherein the first additive comprises a compound selected from the group consisting of Formula 1, Formula 2, and combinations thereof: where R1 is selected from the group consisting of hydrogen, C 1 -C 6 alkyl groups, and C 2 -C 6 alkylene groups; R4 is selected from the group consisting of: C 1 -C 6 alkyl groups, where R6 is selected from the group consisting of hydrogen, C 1 -C 6 alkyl groups, and C 2 -C 6 alkylene groups, and —OR7 where R7 is selected from the group consisting of hydrogen, C 1 -C 6 alkyl groups, and C 2 -C 6 alkylene groups; and R5 is selected from the group consisting of C 1 -C 6 alkyl groups and C 2 -C 6 alkylene groups; a second additive having an oxidation potential from 4,4 to 5.OV; a non-aqueous organic solvent; and a lithium salt.