Achieving remarkable capacitive efficiency of pyrochlore type Mn2V2O7 with graphtic carbon nitride (g-C3N4) nanosheets for hybrid supercapacitor applications

Abstract

The increasing demand for energy storage devices that are stable and cost-effective has prompted a continuous investigation into the development of highly efficient electrode materials. This work aimed was to explore the potential applications of Mn₂V₂O₇ and Mn₂V₂O₇/graphitic carbon nitride(g-C₃N₄) composite using hydrothermal method for energy storage purpose. The specific surface area of Mn₂V₂O₇ and Mn₂V₂O₇/g-C₃N₄ composite was determined for Mn₂V₂O₇ was found to be higher than the pure materials. The phase of Mn₂V₂O₇ structure was characterized by its monoclinic nature determined from X-ray diffraction. The Mn₂V₂O₇/g-C₃N₄ composite displayed higher specific capacitance (C_sp) of 858 F g⁻¹ at 1 A g⁻¹ with stability following 5000^th cycles of 40 h resulting and lower resistance value of 0.09 Ω. The exceptional efficiency observed was because of numerous active sites and unique structure of g-C₃N₄. The Mn₂V₂O₇/g-C₃N₄ composite has been identified as capable for supercapacitors and next generation energy storing devices.