Patent ID: 8748045

Claim:
A lithium battery, comprising: an anode; a cathode, located opposite to the anode; a separator, located between the anode and the cathode, wherein the anode, the cathode and the separator commonly define a containing region; and an electrolyte solution, located in the containing region, and comprising an organic solvent, a lithium salt and an additive, wherein the additive comprises: a maleimide-based compound; and a hydroxyl-containing species, having a molecular weight less than 1000, wherein a content of the hydroxyl-containing species in the electrolyte solution is between 50 ppm and 5 wt %, and the hydroxyl-containing species is at least one of compounds expressed by following formulae (2-1)-(2-2) and (3-2)-(3-4) where, n in the formulae (3-2) an (3-3) respectively ranges from 0 to 30.