Patent ID: 7807301

Claim:
A lithium battery, comprising: a silicon negative electrode; a lithium mixed metal oxide positive electrode; a separator disposed between the silicon negative electrode and the lithium mixed metal oxide positive electrode to define a reservoir region; an electrolytic solution filled in the reservoir region; and a sealant structure wrapped around the silicon negative electrode, the lithium mixed metal oxide positive electrode, the separator, and the electrolytic solution, wherein the electrolytic solution comprises: an organic solvent; a lithium salt; and an additive comprising: maleimide, bismaleimide, a polymaleimide, a polybismaleimide, a copolymer of maleimide and bismaleimide, or mixtures thereof, and vinylene carbonate; wherein the maleimide is, N-(o-methylphenyl) maleimide, N-(m-methylphenyl) maleimide, N-(p-methylphenyl) maleimide, N-cyclohexylmaleimide, maleimidophenol, maleimidobenzocyclobutene, phosphorus-containing maleimide, phosphonate-containing maleimide, siloxane-containing maleimide, N-(4-tetrahydropyranyl-oxyphenyl) maleimide, or 2,6-xylylmaleimide.