▎ 摘　　要

Nano 0.4Li(2)MnO(3)center dot 0.6LiNi(2/3)Mn(1/3)O(2)/graphene composites have been synthesized by a facile sol-gel method and temperature programmed calcination route. The as-obtained products exhibited a nice morphology which was nano-sized cross-linked structure. And it showed an excellent rate performance when it was used as cathode materials for lithium ion batteries. When it was at the current density of 2 C, the discharge capacity could reach to 205 mAh g(-1) for the first cycle and the capacity retention stayed over 97 % after 100 cycles. The superior electrochemical behavior of 0.4Li(2)MnO(3)center dot 0.6LiNi(2/3)Mn(1/3)O(2)/graphene nanocomposite materials could be ascribed to the unique nano-sized cross-linked structure, the maintaining of electrode integrity, the short diffusion distance, and continuously and rapidly electron conducting.