A method of preparing layered lithium-chromium-manganese oxides having the formula
Li[CrxLi(1/3-;x/3) Mn(2/3-;2x/3)]O2 where
0.1X0.5 for lithium batteries. Homogeneous precipitation is prepared
by adding lithium hydroxide (LiOH) solution to a mixed solution of chromium acetate
(Cr3(OH)2(CH3CO2)7) and
manganese acetate ((CH3CO2)2Mn.4H2O),
while precursor powders are prepared by firing the precipitation. After that, the
precursor powders are subjected to two heat treatment to yield Li[CrxLi(1/3-;x/3)
Mn(2/3-;2x/3)]O2 with -LiFeO2 structure.
