Patent ID: 6409984
Filing Date: 2002-06-25
Classification: C01G,C01P,H01M,Y02E

Abstract:
A process for producing a spinel lithium manganese complex oxide for a cathode active material of a lithium secondary battery, which comprises the steps of:a) atomizing and pyrolyzing a composition which consists essentially of an aqueous or alcohol solution of nitrate, acetate or formate of metal elements constituting a spinel lithium manganese complex oxide at a temperature between 500 and 900Â° C. to obtain a spinel lithium manganese complex oxide by atomizing said solution into a heated atmosphere, and b) annealing said spinel lithium manganese complex oxide at a temperature between about 600 and 850Â° C. for a time sufficient to increase the average particle diameter thereof to between about 1 and 5 micrometers and adjust the specific surface area thereof to between about 2 and 10 m2/g.