Preparation of nano-VBO3 on graphene as anode material for lithium-ion batteries

Abstract

VBO3 nanoparticles on graphene sheets (VBO3@G) composite is synthesized by a freeze-drying method as anode material for lithium-ion batteries. After optimization of sintering temperature, reduced graphene oxide (rGO) forms a 3D-framework and VBO3 nanoparticles are adhered to the surface of rGO uniformly. The graphene sheets not only assist the formation of nanoparticles, but also provide an excellent conductive 3D network. It is found that the composite shows a good cycling performance with an initial charge capacity of 779 mAh g−1 at 0.1 C and maintains 610 mAh g−1 after 100 cycles. It also exhibits an excellent rate performance with charge capacities of 592 mAh g−1 at 5 C and 442 mAh g−1 at 10 C.