期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 48, 期 7, 页码 4188-4195出版社
SPRINGER
DOI: 10.1007/s11664-019-07185-8
关键词
Nanocomposites; supercapacitor; Sb; ZnWO4; r-GO
Sb/ZnWO4/r-GO nanocomposite has been prepared by a single step solvothermal method. The crystal structure of the prepared nanocomposite has been characterized using a powder x-ray diffractometer (XRD). The optical properties of the prepared nanocomposite were studied using UV-visible spectroscopy and photoluminescence. The energy band gap of 3.52eV is obtained for the ZWS-5 nanocomposite using Tauc plots. For both Sb/ZnWO4 and Sb/ZnWO4/r-GO nanocomposite XRD shows the monoclinic Wolframite structure. The supercapacitor performance of the prepared samples was carried out using electrochemical techniques such as cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. The nanocomposite ZWS-5 exhibits a specific capacitance of 102 F/g, which is higher than pristine ZWS specific capacitance of 64F/g. Both ZWS and ZWS-5 electrodes show good capacitance retention proficiency even after 1000 cycles.
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