Layered LiNi1/3Co1/3Mn1/3O2 materials were synthesized using a nickel2cobalt2manganese carbonate pre2 cursor obtained by chemical co2precipitation. The [Ni1/3 Co1/3 Mn1/3] CO3 precursor and the LiNi1/3 Co1/3 Mn1/3 O2 powders were characterized by X2ray diff raction (XRD) and scanning elect ron micrograph (SEM). The SEM analysis shows that these particles possess uniform and spherical morphology. The elect rochemical properties of the LiNi1/3 2 Co1/3Mn1/3O2 cathode material for rechargeable lithium2ion bat teries such as the galvanostatic charge2discharge per formance and cyclic voltammet ry(CV) were measured. The result s show that an initial discharge capacity of 190. 29 mA·h·g-1 is obtained in the voltage range of 2.5 4.6 V and at a current rate of 0.1 C at 25 ℃. The discharge capacity increases linearly with the increase of the upper cut2off voltage limit.