Facile Development of Perovskite/g-C3N4 Nanohybrid as Advance Electrode Materials for Supercapacitor

Abstract

New energy storing technologies must be developed immediately because of the serious issues brought by global energy crisis. For supercapacitor applications, the development of effective, stable and sustainable electrode materials with high specific capacitance (C_sp) is necessary. The current investigation highlights the use of CoMoO₃/g-CN electrode materials to enhance supercapacitive properties. The physical and chemical properties hydrothermally developed materials were studied utilising a number of characterisation test. In 3 M KOH solution, electrochemical characteristics of produced electrode materials were observed by galvanostatic charge and discharge (GCD) analysis and cyclic voltammetry. Electrochemical results exposed that CoMoO₃/g-CN nanocomposite exhibited specific capacitance of 964.93 F/g, specific energy (S_E) 44.09 Wh/kg and specific power (S_P) 288.15 W/kg at current density (C_d) 1 A/g. Furthermore, after 3000th cycles, the material exhibits superior cyclic stability compared to the pure material and reduced charge transfer resistance of 0.13 Ω. Addition of graphitic carbon nitride (g-CN) caused high specific capacitance, quick charging discharging and stability of active electrode material, attributed to bigger surface area and excellent electrical conductivity. Moreover, N-enrich structure of g-CN caused a quick ion transport and higher specific surface area. These results demonstrated that advanced CoMoO₃/g-CN can be applied to next-generation supercapacitors.

Graphical Abstract