MnCo2O4 nanospheres entrapped in g-C3N4 network for High-Performance supercapacitor applications

MnCo2O4 2 O 4 nanospheres were embedded in a g-C3N4 3 N 4 network using the solvothermal method with ethylene glycol as the solvent. SEM confirmed the uniformity of the MnCo2O4/g-C3N4 2 O 4 /g-C 3 N 4 nanospheres, while XRD and XPS were used for structural and elemental analysis, including metal oxidation states. BET analysis revealed the surface area and porosity, while TEM analysis provided information on the interplanar spacing and morphology. Electrochemical evaluations using CV, GCD, and EIS demonstrated that the 2D g-C3N4 3 N 4 nanosheets interwoven with MnCo2O4 2 O 4 nanospheres have excellent specific capacities (654 Fg-- 1 at 2 Ag-1)- 1 ) and power densities (1521.2 W/kg at 7 Ag-- 1 ). The electrode material shows superior cyclic stability with 92.3 % capacitance retention after 5000 cycles.