The preparation of CuO@ZnO core-shell materials as high-stability anodes for lithium-ion batteries

In this study, CuO@ZnO core-shell composite materials were successfully reported by chemical processes of depositing ZnO on the CuO surface. When evaluated as a lithium-ion battery anode, the CuO@ZnO composite shows a higher specific capacity of 300 mAh g^-1 at 0.2 C after 100 cycles, especially [email protected]% (the molar ratio of CuO to ZnSO₄·7H₂O of 1:0.065) composite material electrode still holds 459.5 mAh g^-1 discharge capacity after 500 cycles. The test results show that the excellent coating on the CuO@ZnO composites improves the stability performance as electrodes for lithium-ion batteries due to the mechanism of ZnO. Therefore, the certain coverage of the CuO@ZnO composite electrode results in a valuable material for anodes in future batteries.