Layered Li[Ni_(1－x)/3Mn_(1－x)/3Co_(1－x)/3Mo_x]O₂ materials (x＝0, 0.005, 0.01, 0.02) were prepared by a solid-state pyrolysis method. Experiments of XRD, SEM, cyclic voltammetry and charge/discharge cycling were carried out. It indicated that when x＝0.01, the sample showed the highest first discharge capacity of 211.6 mAh•g^－1 at a current density of 20 mA/g in the voltage range 2.3～4.6 V, and stable cycleability by possessing 185.9 mAh•g^－1 after 50 cycles, and the capacity fade was only 12.1%. The Mo-doped samples exhibited higher discharge capacity and better cycleability at room temperature.

Key words: Li battery, MoO₃, doping, cathode material