Nano-Fe2O3-coated NiMoO4 composites for high lithium storage performance

Different amounts of Fe 2 O 3 -coated NiMoO 4 /NiO composites were prepared by solvothermal method following with annealing process. The as-prepared NiMoO 4 /NiO@Fe 2 O 3 composite exhibits a reversible specific capacity of 1250 mAh g −1 after 150 cycles at a current density of 100 mA g −1 as anode for lithium-ion batteries. It exhibits efficient long-term electrochemical performance and maintains the capacity at about 750 mAh g −1 at a high current density of 500 mA g −1 after 200 cycles. The good electrochemical performance of the NiMoO 4 /NiO@Fe 2 O 3 composite may be due to its smaller size and the Fe 2 O 3 coating which can restrain its volume collapse during the charge–discharge cycle. This work could provide a promising strategy for enhancing the performance of molybdate-based composite materials for practical application in lithium-ion batteries.