[1012] The nanocomposite was synthesized by in-situ oxidative polymerization method using aniline as monomer, and ammonium persulphate as the oxidizing agent. PANI/g-C3N4 showed a specific capacitance of 583.5 F g -1 at the current density of 1 A g -1 along with the energy density of 81.15 W h Kg -1 at the power density of 500.04 W Kg -1 . Further, at the power of density of 4998. that a large power range had been obtained while maintaining a relatively high energy density.