Target synthesis of dense C-coated ZnO for advanced lithium storage via a facile and cost-effective approach

Abstract

Herein, ZnO@C composite is synthesized through a facile, time saving, and ecofriendly chemical vapor deposition approach. Very thin and dense carbon layer is well coated on the surface of ZnO nanoparticles. As anode, the ZnO@C composite delivers a high reversible lithiation capacity of 685 mA h g−1 at 0.2 A g−1 and good rate performance (still high as 225 mA h g−1 at 5 A g−1) together with high initial Coulombic efficiency of ~ 72%, which are much better than that of bare ZnO.