▎ 摘　　要

In this work, a hybrid composite of NaTi2(PO4)(3)@C nanocrystals and reduced graphene oxide sheets (rGO-NaTi2(PO4)(3)@C) is designed to improve the speed of charging/discharging and the cycling performance of sodium-ion batteries. The rGO-NaTi2(PO4)(3)@C composite has been successfully synthesized through a hydrothermal route and then followed by the solid-state method. In this composite, the coated carbon and the reduced graphene oxide can construct the conductive networks, which greatly improve the sodium storage performance of NaTi2(PO4)(3) anode. It delivers a reversible capacity of 129.2 mAh g(-1) at 0.1 C and the capacity retains 98.6 mAh g(-1) at 5 C. Moreover, the rGO-NaTi2(PO4)(3)@C anode exhibits a capacity decay of <3% when cycled at 10 C for 15 cycles.