Patent ID: 7745048

Claim:
A rechargeable lithium polymer battery comprising: a negative electrode comprising a negative active material layer deposited on a substrate, wherein the substrate comprises a negative current collector deposited on a supporting polymer film, and the negative active material is selected from the group consisting of lithium metal, an alloy of lithium metal and a material which is capable of reversibly forming a compound with lithium; a positive electrode comprising a positive active material; and a polymer electrolyte comprising a lithium salt, an organic solvent, and a polymer, wherein the polymer electrolyte is prepared by assembling a battery using an electrolyte precursor solution obtained from addition of a polymer-forming compound and an initiator to an electrolytic solution comprising a non-aqueous organic solvent and a lithium salt; and polymerizing the battery at a temperature at which it starts polymerization, wherein the polymer-forming compound is selected from the group consisting of compounds represented by formulas 16 to 18 and combinations thereof: where R a to R f are identically or independently selected from one represented by formulas 16a or 16b: where R 5 is H or CH 3 , n is from 1 to 100,000, and R 6 is H or CH 3 .