Patent ID: 6280699
Filing Date: 2001-08-28
Classification: C01G,C01P,H01M,Y02E

Abstract:
A method of preparing a spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compound comprising:mixing at least one manganese compound selected from the group consisting of manganese salts and oxides with at least one lithium compound selected from the group consisting of lithium salts and oxides, wherein the manganese compound consists of particles having a mean particle diameter of between about 1 and 15 microns and the mean particle size of the lithium compound is less than the mean particle size of the manganese compound; andfiring the mixture from the mixing step in one or more steps within specific temperature ranges to form the spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compound wherein at least one step is at a temperature of between about 700.degree. C. and 900.degree. C.