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

• Published in: Applied surface science 2014-06, Vol.305, p.179-185
• Main Authors: Zhang, Linsen, Wang, Zhitao, Wang, Lizhen, Xing, Yu, Li, Xiaofeng, Zhang, Yong
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Electrochemical performance; Exact sciences and technology; Lithium-ion battery; Physics; Sol–gel method; ZnWO4/CNTs
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2014.03.035

•ZnWO4/CNTs composites have been prepared by sol–gel method as anode material of Li-ion battery.•CNTs addition improves the conduction and alleviates mechanical stress caused by the volume expansion of ZnWO4.•Composites showed the better electrochemical performance such as rate capability, specific capacitance, and cycle performance. 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 466.9mAhg−1 at 50mAg−1. The test cell showed good cycling stability after 50 cycles and exhibits superior rate capability.