Patent ID: 6267943
Filing Date: 2001-07-31
Classification: C01G,C01P,H01M,Y02E

Abstract:
A lithium manganese oxide with a spinel structure and having the formula:Li.sub.1+X Mn.sub.2-Y M.sup.1.sub.m.sub..sub.1 M.sup.2.sub.m.sub..sub.2 . . . M.sup.k.sub.m.sub..sub.k O.sub.4+Zwherein:M.sup.1, M.sup.2, . . . M.sup.k are rations different than lithium or manganese selected from the group consisting of alkaline earth metals, transition metals, B, Al, Si, Ga and Ge;X, Y, m.sub.1, m.sub.2, . . . m.sub.k, each have a value greater than or equal to 0and less than or equal to 0.2;Z has a value greater than or equal to -0.1 and less than or equal to 0.2; andX, Y, m.sub.1, m.sub.2, . . . m.sub.k are selected to satisfy the equation:Y=X+m.sub.1 +m.sub.2 + . . . +m.sub.kand wherein the pore volume of pores having a mean radius of less than 1 micron in said lithium manganese oxide is no more than 20% of the total pore volume of said lithium manganese oxide.