Investigating the electrochemical properties of g-C3N4/NiO nanocomposites for energy storage applications

Abstract

In this study, g-C₃N₄/NiO and pure g-C₃N₄ electrodes were prepared employing one pot hydrothermal technique and thermal decomposition method for supercapacitor applications. The physiochemical properties of the prepared electrodes were examined using various analytical techniques such as XRD, SEM and FTIR. Electrochemical studies were conducted on g-C₃N₄ electrodes and g-C₃N₄/NiO electrodes in 1 M KOH through CV, GCD, and EIS. The specific capacitance of the g-C₃N₄/NiO electrode material is 207.8 F/g, significantly higher than that of bare g-C₃N₄ electrodes (18 F/g). Additionally, g-C₃N₄/NiO nanocomposite electrodes have good cycling stability, retaining 71 % capacitance and 88 % coulombic efficiency after 1000 cycles. Incorporating metal oxide nanoparticles into the g-C₃N₄ matrix enhances the electrochemical performance of the nanocomposite material.