Patent ID: 6183911
Filing Date: 2001-02-06
Classification: H01M,Y02E

Abstract:
A positive active material for rechargeable lithium batteries, the positive active material comprising:an active material component processed from a manganese-based compound, the manganese-based compound being selected from the group consisting of Li.sub.x MnO.sub.2, Li.sub.x MnF.sub.2, Li.sub.x MnS.sub.2, Li.sub.x MnO.sub.2-z F.sub.z, Li.sub.x MnO.sub.2-z S.sub.z, Li.sub.x Mn.sub.1-y M.sub.y O.sub.2, Li.sub.x Mn.sub.1-y M.sub.y F.sub.2, Li.sub.x Mn.sub.1-y M.sub.y S.sub.2, Li.sub.x Mn.sub.1-y M.sub.y O.sub.2-z F.sub.z, Li.sub.x Mn.sub.1-y M.sub.y O.sub.2-z S.sub.z, Li.sub.x Mn.sub.2 O.sub.4, Li.sub.x Mn.sub.2 F.sub.4, Li.sub.x Mn.sub.2 S.sub.4, Li.sub.x Mn.sub.2 O.sub.4-z F.sub.z, Li.sub.x Mn.sub.2 O.sub.4-z S.sub.z, Li.sub.x Mn.sub.2-y M.sub.y O.sub.4, Li.sub.x Mn.sub.2-y M.sub.y F.sub.4, Li.sub.x Mn.sub.2-y M.sub.y S.sub.4, Li.sub.x Mn.sub.2-y M.sub.y O.sub.4-z F.sub.z, and Li.sub.x Mn .sub.2-y M.sub.y O.sub.4-z S.sub.z where 0<x.ltoreq.1.5, 0.05.ltoreq.y.ltoreq.0.3, z.ltoreq.1.0 and M is selected from the group consisting of Al, Co, Cr, Mg, Fe, La, Sr and Ce; anda vanadium pentoxide (V.sub.2 O.sub.5) coated on the active material component.