Facile Synthesis of SnS-Graphene Nanocomposites with High Lithium Storage Capacity

摘要

SnS-graphene nanocomposites were synthesized through homogeneous precipitation method. Thecomposite material as prepared was characterized using X-ray diffraction, Raman spectroscopy,transmission electron microscopy and elemental analysis. The results indicate that SnS nanoparticlespossess a good dispersion on the surface of graphene. The electrochemical performance of SnS- graphene nanocomposites was characterized by galvanostatic charge-discharge tests. The-1 nanocomposites retained a reversible capacity of 679 mAh g after 30 cycles. Moreover, thecomposite material exhibited higher lithium storage capacity and better cycling performance comparedto bare SnS and graphene. The results suggest that the combination of SnS and graphene leads tosynergistic performance, which enhances electrochemical performance of the overall system.