Graphitic carbon nitride (g-C3N4) decorated on CuCo2O4 nanosphere composites for enhanced electrochemical performance for energy storage applications

Abstract

Researchers sought to develop high-performance electrode materials to meet the rising need for renewable energy storage systems in order to build smart technology gadgets with portable characteristics and with global energy security. ACuCo2O4/g-C3N4 nanocomposite was synthesised by employing a facile hydrothermal method. The XRD, FTIR, TEM, XPS, and FESEM results conformed the formation of CuCo2O4/g-C3N4 to a spinel cubic structure in space group Fd3m.For a CuCo2O4/g-C3N4 sample, the specific surface area determined using the Brunauer-Emmett-Teller (BET) isotherms is 51 m2g−1, which is much higher than the surface area for pure CuCo2O4 (32 m2g−1). The g-C3N4 (n-type) wrapped CuCo2O4 (p-type) nanoparticles exhibits incredible specific capacitance of 1948 Fg−1 at 1 Ag−1 and Power density of 1556 W/ kg at 6 Ag−1). Moreover, the long life cycle stability shows 88% capacitance returns after 8000 charge discharge cycles.