SnO sub(2)-CuO/graphene nanocomposites for high performance Li-ion battery anodes

The nanocomposites of SnO sub(2)-CuO/graphene are synthesized via a two-step method. CuO nanorods are firstly uniformly loaded on the graphene nanosheets, and then SnO sub(2) nanoparticles are coated on CuO nanorods. SnO sub(2)-CuO/graphene nanocomposites exhibit high cyclability and capacity as anode of Li-ion battery. After 30 cycles, the capacity can maintain at 584 mAh g super(-1) at 0.1C rate (10 h per half cycle). The high performance can be ascribed to the synergistic effect among SnO sub(2) nanoparticles, CuO nanorods and graphene nanosheets. The results manifest that the nanocomposites of SnO sub(2)-CuO/graphene are very suitable for Li-ion battery anodes.