Patent ID: 6780544
Filing Date: 2004-08-24
Classification: H01B,H01M,Y02E,Y02P,Y10T

Abstract:
A lithium battery comprising:an electrode assembly having a cathode, an anode and a separator interposed between the cathode and the anode, a polymeric gel electrolyte prepared by a process comprising: preparing a solution by dissolving a terpolymer having a repeating unit represented by formula 1, a repeating unit represented by formula 2 and a repeating unit represented by formula 3 in a first organic solvent having a boiling point of 150Â° C. or less, wherein n is an integer from 1 to 12 and R is an alkyl having 1 to 12 carbon atoms, mixing a lithium salt and a second organic solvent with the solution to obtain a composition for forming an electrolyte, sandwiching the polymeric gel electrolyte and the separator between the cathode and the anode to form a sandwiched structure, and removing the first organic solvent from the sandwiched structure, wherein the separator is formed of an insulating resin sheet and the insulating resin sheet is made of polyethylene, polypropylene or a combination thereof.