Hollow core–shell ZnMn2O4 microspheres as a high-performance anode material for lithium-ion batteries

Abstract The hollow core–shell ZnMn 2 O 4 microspheres are successfully prepared by a solvothermal carbon templating method and then a annealing process. The crystal phase and particle morphology of resultant ZnMn 2 O 4 microspheres are characterized by XRD and TEM. The electrochemical properties of the ZnMn 2 O 4 microspheres as an anode material are investigated for lithium ion batteries. The results show that the ZnMn 2 O 4 microspheres exhibit a reversible capacity of 855.8 mA h g −1 at a current density of 200 mA g −1 after 50 cycles. Even at 1000 mA g −1 , the reversible capacity of the ZnMn 2 O 4 microspheres is still kept at 724.4 mA h g −1 after 60 cycles. The enhanced electrochemical performance suggests the promising potential of the hollow core–shell ZnMn 2 O 4 microspheres in lithium-ion batteries.