Abstract <p>The growing need for renewable energy sources has focused a lot of emphasis on the creation of energy-storage devices in recent years. Supercapacitors prolonged cycling stability, high specific power, and quick charge-discharge rate have made them important energy storage devices. The goal of research is to find new electrode materials that can improve supercapacitors specific capacitance. MOs are easily accessible, have a high specific capacitance, and have changeable oxidation states. Despite their processing challenges, MOs open up new possibilities for energy storage technologies in the future. Consideration is given to the most recent advancements in the modeling and characterization of supercapacitor elements (supporting elements, electrolytes and electrode materials,) whose characteristics are optimized for low-power consumers' long-term self-supply (low leakage current, low voltage, high energy density, etc.). Recent investigations have shown that there is a significant newdevelopment in electrode materials for SCs (Supercapacitors). In this analysis, we emphasized the latest improvements in cobalt oxides, GO (graphene oxides), as well as their nanocomposites as electrode materials for SC.</p>