Patent ID: 6379843
Filing Date: 2002-04-30
Classification: C01G,C01P,H01M,Y02E,Y02P,Y10T

Abstract:
A lithium secondary cell comprising a positive electrode containing lithium titanate as an active material, a negative electrode containing a carbonaceous material as an active material, and an electrolytic solution comprising a solution of a lithium salt in an organic solvent, whereinsaid positive electrode, said negative electrode and said electrolytic solution are sealed in a space formed by a positive electrode can, a negative electrode can and an insulation packing, said lithium titanate has a composition represented by the formula: LixTiyO4 wherein x and y are in the range between 0.8 and 1.4 (0.8&lE;x&lE;1.4), and between 1.6 and 2.2 (1.6&lE;y&lE;2.2), respectively, andlithium ions are doped and dedoped at a nominal voltage of 1.5 V.