Patent ID: 8501355

Claim:
An electrolyte, comprising: a compound represented by the following Formula 1 B—R 0 -A Formula 1 wherein B is one or more selected from —NO 2 , —NH 2 , —SiOH or (R 1 CO)O(COR 2 ) wherein R 1 is a C 1 to C 10 alkyl group, R 2 is a C 1 to C 10 alkylene group, a C 1 to C 10 haloalkylene group, or a C 6 to C 12 arylene group; R 0 represents R, OR, SR, COR, OCOR, NRR′, and CONRR′ wherein R is a C 1 to C 10 alkylene group, a C 1 to C 10 haloalkylene group, or a C 6 to C 12 arylene group, R′ is a hydrogen atom, a halogen atom or a C 1 to C 10 alkyl group, and R and R′ may form a ring together; and A is selected from NCO or CN, wherein the electrolyte reacts to an acid catalyst site of a carbon-based negative electrode material including —COOH, and the decreasing rate of a battery output measured after 4 weeks at 60° C. is less than 10% under the USABC FreedomCar regulation.