▎ 摘　　要

Na-ion battery has been investigated as a potential candidate for Li-ion battery because of its abundant sodium resource. One of the advanced anodes for Na-ion battery is NaTi2(PO4)(3) due to the open 3D framework, good thermal structure and high Na+ conductivity. However, the NaTi2(PO4)(3) material possesses a low electrical conductivity, which hinders its application for large-scale sodium storage. Herein, the nanosized NaTi2(PO4)(3)@C crystals embedded in 2D sulfur-doped graphene sheets are synthesized using a simple method. The 2D sulfur-doped graphene sheets can easily facilitate the transport of electrons/ions and inhibit the volume change during the insertion/extraction of Na+ ions, resulting in superior rate property. The synthesized electrode shows the high discharge capacity (130.1 mAh g(-1) at 0.1 C), excellent rate property (112.8 mAh g(-1) at 10 C) and stable cycle life (95.8 mAh g(-1) over 500 cycles at 20 C), revealing its great application for Na-ion battery. This novel strategy could be applied to synthesize other advanced electrode materials for electrochemical sodium storage. (C) 2018 Elsevier Ltd. All rights reserved.