Facile Solvothermal Synthesis of NiO/g-C3N4 Nanocomposite for Enhanced Supercapacitor Application

There is a desperate demand for efficient energy storage systems to fulfill future demands. Herein, we exemplify facile solvothermal approach followed by heat treatment synthesize NiO/g-C3N4 nanocomposites enhanced supercapacitor applications. The molar ratio of g-C3N4 varied achieve numerous nanostructures like nanoparticles and nanorods with optimum specific capacitance. Further, all as-prepared electrode materials are examined application. electrochemical behavior prepared carried out under cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), impedance spectroscopy (EIS) in three-electrode cell different electrolytes such as aqueous sodium sulphate electrolyte (1.0 M Na2SO4) potassium hydroxide (3.0 KOH). Among the materials, NO-4 (1 : 2) shows highest capacitance 338.68 F/g at scan rate 2 mV/s 161.3 current density 1 A/g 1.0 Na2SO4 electrolyte. Also, this material 95.22 3.0 KOH excessive due retarded charge transfer resistance interface increased number active sites. investigation electrokinetics electrodes was also out, it revealed contribution capacitive diffusive parts which levitates higher two-electrode study evaluating performance studied. NO-4//NO-4 SSD 18.23 corresponding 10.13 Wh/kg power 1.01 kW/kg, respectively.