LaF3 coated LiNi1/3Co1/3Mn1/3O2 cathode material was prepared by coprecipitation method. The synthesized material was characterized by means of X-ray diffraction (XRD), scanning electron microscope (SEM) and galvanostatic charge/discharge cycling. The XRD data of the product show that they are single phases and retain the layered LiNi1/3Co1/3Mn1/3O2 structure. The synthesized the photocatalytic activity of 0.59% LaF3 coated LiNi1/3Co1/3Mn1/3O2 exhibits a good overcharge tolerance property with initial discharge specific capacity of 172.7 mAh/g and the discharge specific capacity of 163.5 mAh/g after 50 cycles in the voltage range 2.75~4.50 V at a constant current density of 0.3 mA/cm2.