Facile fabrication of molybdenum dioxide/nitrogen-doped graphene hybrid as high performance anode material for lithium ion batteries

A facile, environmentally friendly and low-cost synthesis strategy is demonstrated to fabricate a MoO₂/N-doped graphene (MoO₂/N-GNS) hybrid, in which MoO₂ nanoparticles (NPs) are uniformly dispersed on N-GNS sheets by Mo-N chemical bond formed between MoO₂ and N-GNS. As an anode material in lithium ion batteries, the MoO₂/N-GNS hybrid possesses superior rate capability, excellent cycling performance as well as high reversible capacity. A reversible capacity of 1138.5 mA h g^-1 is maintained after 60 cycles at a current density of 100 mA g^-1, and even at a high current density of 1000 mA g^-1, the specific capacity of 873.7 mA h g^-1 can be obtained after 60 cycles. The superior electrochemical performance of the MoO₂/N-GNS hybrid can be attributed to the synergistic effects of nitrogen-doping, flexible and conductive GNS, and MoO₂ NPs.