▎ 摘　　要

The iron-doped SnO2/reduced graphene oxide (Fe-SnO2/rGO) composite has been facilely synthesized through a simple wet chemical method. It is shown that the Fe-SnO2 nanocrystals (similar to 8 nm) are homogeneously anchored onto rGO sheets with the content of 69.5 wt%. As the anode material for lithium-ion batteries, the as-prepared Fe-SnO2/rGO composite exhibits a reversible capacity of 1353 mAh g(-1) after 100 cycles at 0.1 A g(-1). Even at a high specific current of 1 A g(-1), it still maintains a high reversible capacity of 691 mAh g(-1), and a capacity of 1248 mAh g(-1) can be delivered when the specific current returns back to 0.1 A g(-1) after 50 cycles at different specific currents. The excellent electrochemical performance of Fe-SnO2/rGO composite can be attributed to the Fe doping, which can enhance the interfacial interaction between Fe-SnO2 nanocrystals and rGO sheets, improve the electrical conductivity of the composite and more importantly, facilitate the conversion reaction between Li2O and SnO2 during cycling. (C) 2018 Elsevier B.V. All rights reserved.