<p>The development of high-performance electrode materials is critical for enhancing the energy storage capabilities of supercapacitors. In this study, cobalt vanadium oxide(pristine) and its graphitic carbon nitride(GCN) incorporated cobalt vanadium oxide nanomaterials were synthesized and investigated as an electrode material for supercapacitors. The green chemistry, microwave method, was employed for the preparation of nanocomposites. The X-ray diffraction (XRD) analysis reveals the nano-crystalline nature of pristine and GCN-added cobalt vanadium oxide materials. The surface morphology of prepared samples was analyzed using field emission scanning electron microscopy (FESEM) analysis. The addition of GCN benefits in the formation of uniformly distributed cobalt vanadium oxide nanoparticles. The valance states of the elements presented in the prepared composite were examined using X-ray photoelectron spectroscopy (XPS) technique. Half-cell mode was employed to assess the charge storage process of the prepared materials. The electrodes of the prepared materials store energy through the pseudocapacitive nature. The electrodes of cobalt vanadium oxide, consisted of 5 wt.% GCN yields maximum capacity of 380 C g^–1 and it is 226% higher than the pristine cobalt vanadium oxide electrodes. Besides, full cell was devised using activated carbon as the counter electrode. The assembled device could yield maximum specific energy of 25 W h kg^–1 at a rate of 815 W kg^–1. Moreover, 12% of energy has been found to be retained when rate of delivery is increased to 7.8 fold. All the studies represent that the GCN added cobalt vanadium oxide nanospheres are suitable materials for the construction of supercapacitors.</p>