Synthesis and Characterization on Copper Oxide Anode of Lithium-Ion Battery

Ultra-thin CuO nanomaterial was easily prepared by calcining the copper hydroxide precursor which was obtained from solution route. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to characterize the structure and morphology of annealed samples. The results demonstrate the material exists as uniform nanosheets with a nominal thickness of 5 nm. The electrochemical performances were measured and analyzed via cyclic voltammetric curves (CV), electrochemical impedance spectra (EIS), charge/discharge curves, and cycling performances. The discharge capacity of the CuO nanosheets in the first cycle can achieve 826.7 mAh g−1 with the coulombic efficiency of 57.45%. The first cycle has a charge specific capacity of 475 mAh g−1. The charge capacity maintained 376.1 mAh g−1 at a current density of 100 mA g−1 even after 40 cycles.