▎ 摘　　要

Graphene-SnO2 nanocomposite was rapidly synthesized by a microwave-assisted method without using any additive. The as-prepared nanocomposite exhibits excellent electrochemical performance for lithium-ion batteries. Results show that the graphene-SnO2 nanocomposite with 70 wt% SnO2 content exhibits a stable capacity of about 890 mA h g(-1) without noticeable fading for up to 80 cycles at a current density of 500 mA g(-1). Even when cycled at a high current density of 1000 mA g(-1), the specific capacity still remains approximately 790 mA h g(-1). The good electrochemical performance can be attributed to the porous structure of the nanocomposite and the restriction effect of graphene on the volume change of SnO2 nanoparticles. (C) 2013 Elsevier B.V. All rights reserved.