▎ 摘　　要

A novel method of mechanical exfoliation followed by hydrothermal approach was proposed to synthesize the tin oxide/graphene aerogels (SnO2/GAs) nanocomposites. Homogeneous distribution of SnO2 nanocrystals on GAs was confirmed by SEM, XRD and TEM characterization. It was found that optimized exfoliation of the SnS2 is the key factor to obtain high electrochemical lithiation/delithiation performance of the anodes. The as-prepared SnO2/GA nanocomposites exhibited high reversible capacity (up to 1086.7 mAh g(-1) after 100 cycles) and excellent cycling stability. The improved rate capability was also obtained, for instance, the reversible capacity at a current density of 800 mA g(-1) is over 447.9 mAh g(-1), and then recovered to as high as 784.4 mAh g(-1) at a current density of 100 mA g(-1). (C) 2015 Elsevier B.V. All rights reserved.