Patent ID: 6348182
Filing Date: 2002-02-19
Classification: C01G,C01P,H01M,Y02E

Abstract:
A process for producing a lithium manganese oxide with a spinel structure useful as a cathode material of an organic electrolyte lithium ion secondary battery, which comprises:mixing lithium hydroxide with porous particles of manganese dioxide in a solvent selected from the group consisting of an aliphatic lower alcohol having from 1 to 3 carbon atoms and a mixture containing the aliphatic lower alcohol and water in an amount up to 20 weight % to dissolve the lithium hydroxide in the solvent and diffuse the resultant lithium ions into the porous particles of manganese dioxide thereby to form a mixture; and then calcining said mixture at a temperature ranging from 300-800Â° C. to form lithium manganese oxide with a spinel structure.