Electrochemical performance of ZnWO4/CNTs composite as anode materials for lithium-ion battery

ZnWO4/CNTs composite prepared by sol-gel method was investigated as anode material of Li-ion battery. Structure and morphology of the anode materials were analyzed by XRD and SEM. The electrochemical performances of composites were investigated by constant current charge/discharge, cyclic voltammetry (CV) and electrochemical impedance spectrum (EIS). The single wolframite phase can be found in the products. Coin test cells were assembled to evaluate the Li-uptake properties and found high reversible capacity of 466.9 mAh g−1 at 50 mA g−1. The test cell showed good cycling stability after 50 cycles and exhibits superior rate capability.