Preparation and electrochemical properties of Ti-doped LiNi1/3Co1/3Mn1/3O2 cathode materials via co-precipitation route

LiNi1/3Co1/3−1/20Mn1/3Ti1/20O2 composite was prepared by co-precipitation route. The inflect of Ti-doped on the structure, morphology, and electrochemical properties of the materials were analyzed by X-ray diffraction (XRD), scanning electron microscopy and energy dispersive spectrometer (SEM–EDS), charge and discharge battery test, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry. The material with doping Ti4+ had a small particle size, regular shape, and high crystallinity. The initial discharge specific capacity of 0.1 C was 170.3 mAh·g−1 with a coulombic efficiency of 98%. After 30 cycles, the specific discharge capacity was 162.3 mAh·g−1, and the capacity retention rate was 95%. Doping Ti4+ is beneficial to improve the cycle and rate performance of LiNi1/3Co1/3Mn1/3O2 material.