THE IN-LIQUID MICROWAVE PLASMA IRRADIATION ON NAOH-ACTIVATED CARBON OF THE ENERGY STORAGE ELECTRODES

Abstract

Evolution of energy storage systems, especially concerning electrodes, always continue In this study. In this work, we use in-liquid MW plasma with to improve the electrochemical properties of energy storage electrodes on the activated carbon. MW plasma irradiation was applied for 1, 2 and 3 minutes in NaOH -activated carbon solution. This was the first time that nickel was used as the current collector, NaOH as electrolyte and PTFE membrane as separator in the electrochemical characteristics of a supercapacitor. For the characterization of the activation of carbon, SEM and XRD analyses were performed and it was shown that when the plasma irradiation time increased the carbon density decreased. The surface topography is characterized here at larger pores and the conversion of potassium oxide phases into potassium sulfide. The galvanostatic charge/discharge and cyclic voltammetry were utilized to study the electrochemical properties of supercapacitors. The highest capacitance obtained was with 1 M NaOH electrolyte with 1 minute microwave plasma treatment and optimal energy and power densities were realized with a 3 M NaOH electrolyte with 1 minute microwave plasma irradiation. where ionic conductors serve as electrolytes between electrodes.

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