Patent ID: 7078132

Claim:
A lithium battery comprising: an anode; a cathode comprising a compound capable of intercalating and deintercalating lithium; a separator interposed between the cathode and the anode; and an electrolyte solution having an electrolyte solute dissolved in a nonaqueous solvent, the nonaqueous solvent comprising a mixed solvent containing 8 to 15% by volume of ethylene carbonate, 10 to 35% by volume of γ-butyrolactone, 35 to 65% by volume of at least one linear carbonate selected from the group consisting of dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate, methylpropyl carbonate, ethylpropyl carbonate and methylbutyl carbonate and 8 to 15% by volume of fluorobenzene, and 0.5 to 9 parts by volume of vinylene carbonate based on 100 parts by volume of the mixed solvent.