ZnWO4 anode material preparation by sol-gel method and its electrochemical performance
XIE Wen-ju
WANG Zhi-tao
ZHANG Lin-sen
JIN Kai
WU Fang-li
Abstract：ZnWO4 materials were prepared by citrates sol-gel method. The effect of sintering temperature on preparation process of samples was studied. The thermo-decomposing process of the precursor was analyzed by TG/ DSC;the crystal structure and morphology of samples were characterized by XRD and SEM,and the electrochemical performance was tested by continuous current charge-discharge,cyclic voltammetry (CV)and electrochemical impedance spectroscopy(EIS). The results showed that the materials prepared at 550 ℃ had well developed crystal structure and better electrochemical properties with the first discharge specific capacity of 446. 29 mAh / g and the reversible specific capacity of 200. 7 mAh / g after cycle 20 times,specific capacity decayed slowly,charge and discharge efficiency was also high,and it showed a good cycle performance.
Keywords：lithium-ion batteryZnWO4 materialsol-gel methodsintering temperatureelectrochemical per-formance
Publication Date：2015-04-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 11-15,21 )