Patent ID: 6814894
Filing Date: 2004-11-09
Classification: C01G,C01P,H01M,Y02E

Abstract:
A lithium-manganese complex oxide having a spinel crystalline structure, which is represented by a formula Li[Mn2-X-YLiXMY]O4+&dgr;, wherein M is at least one element selected from the groups IIa, IIIb and VIII of the 3rd and 4th periods, and 0.02&lE;X&lE;0.10, 0.05&lE;Y&lE;0.30 and âˆ’0.2&lE;&dgr;&lE;0.2, wherein half value width of the (400) plane of powder X-ray diffraction by CuK&agr; is 0.22Â° or less, and average diameter of crystal grain's by SEM observation is 2 &mgr;m or less.