Self‐Integrated Porous Leaf‐like CuO Nanoplate Array‐Based Anodes for High‐Performance Lithium‐Ion Batteries

Abstract

AbstractDeveloping high‐energy‐density lithium‐ion batteries (LIBs) is of great significance for their wider commercialized application. The design of self‐integrated electrodes can be treated as a valid approach to achieve this goal. In this work, a facile and low‐cost wet chemical oxidation strategy is put forward to prepare self‐integrated porous leaf‐like CuO nanoplates on Cu foil substrates in situ. These nanoplates are then directly used as the anode for LIBs. The morphology, structure, and composition of the resultant CuO/Cu hybrid foils are characterized, and the relevant lithium storage properties of this anode are also investigated by using standard electrochemical tests. The results show that the CuO/Cu hybrid‐based anode possesses a porous leaf‐like morphology and self‐integrated architecture. Benefitting from this unique morphology and favorable architecture, the CuO/Cu hybrid‐based anode exhibits outstanding electrochemical performance, including excellent cycling stability and remarkable rate capability, demonstrating great potential in the application of high‐energy‐density LIBs.