Mo-doped Li2ZnTi3O8@graphene as a high performance anode material for lithium-ion batteries

Li2Zn0.93Mo0.07Ti3O8@graphene conductive network is successfully synthesized via a simple solid-state reaction. The designed structure is highly advantageous to its electrochemical performance. After cycling for 600 cycles, 82.4% of the capacity for the 2nd cycle is kept at 1 A g−1. After 300 cycles, 210 and 179 mAh g−1 are obtained at 2 and 3 A g−1, respectively. Even at the high current densities of 4 and 5 A g−1, 164 and 153 mAh g−1 are still delivered at the 200th cycle, respectively. In addition, the Li2Zn0.93Mo0.07Ti3O8@graphene has good cyclic performance at the high temperature of 55 °C. The excellent cyclic performance and the large specific capacities at high rate are due to the good conductive network, stable structure, large pore volume, small particle size, and good kinetics behavior.