Patent ID: 7255966

Claim:
A non-aqueous electrolyte for a lithium secondary battery comprising: a lithium salt; a non-aqueous organic solvent; and at least one organic compound present in a weight ratio of 0.1 to 10 wt % and selected from a group consisting of the compounds represented by the following Formulae (3) or (4): R 9 —SO 3 —Si(C m H 2m+1 ) 3 (3) C n X 2n+1 —SO 3 —Si(C m H 2m+1 ) 3 (4) where R 9 is selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.