Disclosed is a positive active material for a rechargeable lithium battery.
The positive active material includes at least one compound represented by
formulas 1 to 4 and a metal oxide or composite metal oxide layer formed on
the compound.
##EQU1##
(where M is selected from the group consisting of Co, Mg, Fe, Sr, Ti, B,
Si, Ga, Al, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb,
Lu, Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No and Lr,
0.95.ltoreq.x.ltoreq.1.1, 0
