▎ 摘　　要

Sodium-ion batteries (SIBs) recently have received a worldwide attention due to the resource abundance of sodium and similar battery chemistry with lithium-ion batteries (LIBs). However, search for suitable anodes for SIBs still remains a challenge since graphitized carbon, the anode for commercial LIBs, usually exhibits low electrochemical Na-storage activity. In this work, a unique graphene-reinforced Ni3S2 thin film (Ni3S2/G) has been constructed and investigated as a promising anode for SIBs. The Ni3S2 thin film has a thickness of 200-300 nm and is composed of small sized crystals of around 100 nm. The graphene has a wrinkled surface profile which offers three-dimensional networks for electron conductivity and structural reinforcement. The Ni3S2/G thin film exhibits high capacity, excellent cycling stability and good rate capability due to the introduction of wrinkled graphene. Ni3S2/G can deliver a high initial capacity of 791 mAh g(-1) at 50 mAg(-1). The capacity can be maintained at 563 mAhg(-1) after 110 cycles. This work provides a unique design for high-performance SIBs anodes. (C) 2016 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.