Investigating the enhanced nanostructures of MnO2/CuO/Co3O4 for their potential use as electrodes in supercapacitor application

This study explores the synthesis of rod-like manganese-copper-cobalt (MCC) composites through a hydrothermal process, resulting in visually appealing morphologies. The synthesized MCC nanocomposites characterization through various techniques. The analysis confirmed the incorporation of transition-metal oxides in metallic composites in the desired oxidation states. The electrochemical performance of the rod-like MCC composites was evaluated. The results revealed impressive pseudocapacitance characteristics, with a high specific capacitance of 670.31 Fg −1 at 5 mVs −1 and excellent cycling stability, retaining 91 % capacitance even after 5000 cycles. Further calculations demonstrated notable areal-specific capacitance (231.38 mFcm −2 ), energy density (0.0157 mWh cm −2 ), and power density (0.1487 mW cm −2 ) for the MCC composites. These findings demonstrate the potential of well-morphologically established MCC composites as capable electrode materials for energy storage in electrochemical supercapacitors. • Synthesized MCC composites with visually appealing rod-like morphologies. • Confirmed transition-metal oxides in desired oxidation states via characterization. • Achieved high specific capacitance of 670.31 Fg⁻¹ at 5 mVs⁻¹ . • Demonstrated 91 % capacitance retention after 5000 cycles.