▎ 摘 要
High electrochemical performance anode materials played a key role in the lithium-ion batteries employed in electric vehicles. In this work, graphene nanosheets wrapped CoFe2O4 (G/CFOs) composites were successfully prepared by a facile one-pot method with hydrothermal reaction. The scanning electron microscopy showed that the CoFe2O4 nanospheres were uniformly wrapped by the graphene nanosheets. The as-prepared G/CFOs composites displayed excellent electrochemical performance with high specific capacity of 1496 mAh g(-1) at the current density of 0.2 A g(-1) and superior rate performance of 1026 mAh g(-1) at high rate of 6 A g(-1). Besides, the G/CFOs composites exhibited excellent cycle stability of 796 mAh g(-1) at 6 A g(-1) after 300 cycles. It is believed that our work may provide a new method to develop the anode materials for the lithium-ion batteries.