▎ 摘　　要

Graphene/In2S3 nanoparticle composites were synthesized by an easy and scalable hydrothermal method without any surfactant, strong reducing agent or highly toxic hydrazine. Graphene oxide acts as a scaffold for growth of In2S3 nanoparticles and was simultaneously reduced to graphene in the growth process of In2S3 nanoparticles. The composites with different mass ratios of graphene were used as anodes in rechargeable lithium ion batteries. Transmission electron microscopy characterization and impedance measurement verified that graphene can act as a buffering layer to accommodate the volume change of In2S3 and facilitate the charge-transfer process. The battery with graphene/In2S3 nanoparticle composites anode showed a remarkable Li-storage performance with a better cycling life and higher capability than that of the pure In2S3. The graphene/In2S3 nanoparticle composites retain a high discharge capacity of similar to 1000 mA h g(-1) after 200 cycles at a current density of 0.1 A g(-1). Investigation on the changes in morphology, phase, and microstructure of the graphene/In2S3 nanoparticle composite upon cycling indicate that the incorporation of graphene with In2S3 can optimize the morphology and phase stability of In2S3. It is believed that the scalable preparation process and the respectable electrochemical performance would pave the way for practical application.