▎ 摘　　要

The SnO2 nano-flower/graphene (SnO2-NF/GN) composites were synthesized by using graphene (GN) and SnO2 nano-flower (SnO2-NF). Among them, the SnO2-NFs were prefabricated by using sodium hydroxide and stannic chloride pentahydrate (SnCl4 center dot 5H(2)O) as raw materials. The results of SEM show that the SnO2-NFs are uniformly dispersed on the surface of GN. Furthermore, compared with the pure SnO2, the as-prepared SnO2-NF/GN composites displayed superior cycle performace and high rate capability. The SnO2-NF/GN composite delivers a specific capacity of 650 mAh g(-1) after 60 cycles and an excellent rate capability of 480 mAh g(-1) at 2000 mA g(-1).