▎ 摘　　要

Indium sulfide has been proved to be a high-capacity anode material for sodium-ion batteries, but severe volume changes and low electrical conductivity limit its practical electrochemical performance. Based on this, graphene (RGO)-loaded In2S3 nanosheets array composites (In2S3/RGO) are synthesized by a simple reflux method to enhance charge transfer and ion diffusion kinetics as well as the structural stability of electrodes. By optimizing the amount of RGO, In2S3/RGO exhibits a high specific capacity of 450 mAh g(-1) at 2 A g(-1) after 500 cycles with a capacity fading of 0.04% per cycle (from 2nd to 500th) and remarkable rate performance of 460 mAh g(-1) at 12 A g(-1). The XRD and HRTEM analysis indicates that In2S3/RGO is based on a conversion mechanism for energy storage. Furthermore, the In2S3/RGO//Na3V2(PO4)(3) full cell is successfully fabricated. The simple and efficient synthesis method and the excellent sodium storage properties offer great prospects for the practical application of In2S3/RGO. (C) 2022 Published by Elsevier B.V.