▎ 摘　　要

Nitrogen-doped carbon coated Li3V2(PO4)(3)/C (LVP/C) composite materials with sucrose, chitosan, and nanoporous graphene oxide were prepared via two routes, i.e., the solid-state and sol-gel methods. The electrochemical performances of LVP/C composites were examined and compared. All LVP/C materials with the same amount of carbon sources were sintered at 800 degrees C for 12 h. The galvanostatic charge -discharge test was conducted in the potential range of 3-4.8 V at various C rates. The discharge capacities of the LVP/C composites via the solid-state and sol gel methods were 157 and 187 mA h g(-1), respectively, at 0.1C; however, they were 108 and 112 mA h g(-1), respectively, at 10C. The sol-gel method clearly demonstrated the most desirable performance among two routes. LVP/C composite exhibited excellent charge retention performance, ca. 94% and 96% for 100 cycles at 1C and 5C. Nitrogen-doped carbon coated LVP/C composite with nanoporous graphene shows a promising candidate for Li ion battery high-power applications. (C) 2016 Elsevier B.V. All rights reserved.