Patent ID: 6576216
Filing Date: 2003-06-10
Classification: C01G,C01P,H01M,Y02E,Y02P

Abstract:
A method for manufacturing lithium-manganese oxide powders for use in a lithium secondary battery comprising the steps of:(a) dissolving in nitric acid a material selected from the group consisting of manganese oxide, manganese carbonate, and manganese to form a manganese solution; (b) dissolving in said manganese solution a material selected from the group consisting of lithium carbonate, lithium hydroxide, and lithium acetate wherein a 2 Li/Mn ratio is between 0.95-2.00 for forming a mixed metal solution; (c) adding glycine to the mixed metal solution; (d) drying the mixed metal solution of step (c) at a temperature of between 150Â° C.-200Â° C. in a vacuum dryer to form a combustible resin; (e) combusting the combustible resin by ignition, said combustion forming combustion products; and, (f) thermally treating said combustion products obtained in step (e) to form said lithium-manganese oxide powders.