Facile and rapid synthesis of RGO–In2S3 composites with enhanced cyclability and high capacity for lithium storage

Abstract

A sheet-on-sheet reduced graphene oxide–β-In₂S₃ (RGO–In₂S₃) composite, was successfully synthesized via a one-step mild method. This fresh composite used as an anode material exhibits enhanced cyclability and specific capacity for lithium storage. These results are linked with the intrinsic layered structure of β-In₂S₃ sheets and the effective combination of β-In₂S₃ and RGO sheets. This results in a high specific surface area and good conductivity of RGO–In₂S₃ composites, with higher transport rates of electrolyte ions and electrons, and a more effective electrochemical reaction of the active material. This facile and rapid synthesis method is a promising route for a large-scale production of graphene-based metal sulfides, which could be used as electrode materials for Li-ion batteries.