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Abstract

Graphene oxide-based composites enhance electrochemical performance by improving conductivity, stability, and surface area, making them ideal for energy storage, sensors, and catalytic applications. In this study, Graphene oxide-based composites were synthesized to improve their performance in different electrochemical applications. RGO-based composites were synthesized using the hydrothermal method. XRD, FTIR, and SEM Electrochemical measurements (CV) were used to characterize the synthesized material. Electrochemical measurements (CV) were observed utilizing a three-electrode setup using composite-coated Ni foam. The nature of surface-active sites was detected from the voltammograms. Among the RGO-based composites studied, RGO- MoO2 demonstrated superior capacitive performance, achieving a maximum capacitance of 1851.60 F/g at a scan rate of 10 mV/s. This outperforms both RGO-CdO (1643.70 F/g) and RGO-CuO (1206.90 F/g). The enhanced capacitance of RGO- MoO2 is attributed to its larger surface area and more porous structure, which facilitate better electrolyte accessibility and ion diffusion within the material.