Effect of temperature on the electrochemical performance of silver oxide thin films supercapacitor
Oje A.I. Ogwu A.A. Oje A.M.
1 February 2021Elsevier B.V.
Journal of Electroanalytical Chemistry
2021#882
The effect of temperature change on the electrochemical performance of silver oxide thin films supercapacitor in an aqueous electrolyte (saline solution), is presented in this paper. Scanning electron microscopy and energy-dispersive X-ray spectroscopy (EDX) were used to probe the morphology and the elemental constituent of the prepared silver oxide thin films. The stoichiometry along with oxide phases of the films were observed with X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The effect of temperature in the range 35 °C to 75 °C, on the electrochemical performance of the films were evaluated by applying electrochemical impedance spectroscopy (EIS), charge-discharge and cyclic voltammetry (CV). The EIS and CV results indicate improved electrochemical performance as operating temperature increases, with an increase in capacitance and reduction in resistance observed. The enhanced electrochemical capacity of the silver oxide thin films with temperature can be attributed to higher ionic conductivity, reduced resistance and faster ion adsorption/desorption at higher temperatures.
Charge-discharge , EIS , Silver oxide , Temperature effect
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School of Engineering and Computing, University of the West of Scotland, High Street, Paisley, PA1 2BE, United Kingdom
East Kazakhstan State Technical University, Ust-Kamenogorsk, Republic of Kazakhstan, Kazakhstan
School of Engineering and Computing
East Kazakhstan State Technical University
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