Multilayer graphene oxide (GO) is a versatile two-dimensional nanomaterial that holds great promise for energy storage due to its large surface area, high chemical reactivity, and abundance of oxygen-containing functional groups. Electrochemical reduction offers an environmentally friendly and effective way to improve conductivity of GO and tailor its surface chemistry. However, the impact of different aqueous electrolytes on the efficiency of GO reduction and the properties of the resulting material is not yet fully understood. In this study, we investigate the electrochemical reduction behavior of multilayer GO in various electrolytes, including aqueous sodium nitrate (NaNO₃), lithium bis (trifluoromethanesulfonyl)imide (LiTFSI) in a water-in-salt configuration, and alkaline potassium hydroxide (KOH), focusing on their application as supercapacitor electrodes. Multilayer GO was prepared using the Hummers method and then electrochemically reduced. The electrochemical performance of the resulting electrodes was assessed through cyclic voltammetry, galvanostatic charge-discharge, and impedance spectroscopy. Morphological and elemental characterization of GO and reduced GO were determined by employed Scanning Electron Microscopy coupled with Energy Dispersive X-ray Spectroscopy (SEM-EDS). The electrochemically reduced GO (Er-GO) electrodes demonstrated superior capacitive performance, achieving a specific capacitance of about 12 F·g ^-1 at 1.5 V under slow scan conditions, significantly outperforming the unreduced GO. These results highlight the important role electrolyte choice plays in controlling the reduction process, defect formation, and conductivity of GO. This research offers valuable insights into optimizing reduced graphene oxide materials for high-performance aqueous supercapacitors, contributing to the advancement of sustainable energy storage technologies.