Synthesis and electrochemical performance of V2O5 doped MoO3 cathode materials

Abstract A series of cathode materials for lithium-ion batteries with the formula (MoO 3 ) 1− x (V 2 O 5 ) x ( x = 0.00, 0.01, 0.02, 0.03, 0.04) were synthesized by high-temperature solid-state method. The effects of V 2 O 5 on the structural, morphology and electrochemical properties of the cathode materials were investigated through X-ray diffraction (XRD), scanning electron microscopy (SEM), charge–discharge test, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) experiments. The results show that cathode materials exhibit better electrochemical performance after V 2 O 5 doping. (MoO 3 ) 0.98 (V 2 O 5 ) 0.02 shows the highest first discharge capacity of 280.6 mAh g −1 and the best cycling reversibility.