Preparation of tin sulfide-graphene composites with enhanced lithium storage

Tin sulfide-graphene nanocomposites have been synthesized through a facile one-pot solvothermal route. The as-prepared composites are characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller analysis and elemental analysis. The results indicate that tin sulfide nanoparticles are homogeneously anchored on the surface of graphene. The electrochemical performance of tin sulfide-graphene composites is evaluated by galvanostatic charge-discharge tests and electrochemical impedance spectroscopy. Results show that the composites exhibit enhanced reversible lithium storage properties with high reversible capacity and good cyclic performance. The method presented in this work may provide a facile and economic strategy for the preparation of metal sulfide-graphene composites. (C) 2013 Elsevier B.V. All rights reserved.