Facile synthesis of FeAl2O4@ZnO electrode material for supercapacitor application

A significant challenge faced by the electrical energy storage (ES) industry in the 21st century is the creation of ultrahigh performance energy systems that employ safer, more efficient and faster electrical energy system materials. In this article, the hydrothermal route was used to fabricate the FeAl2O4 (FAO) spinel structure electrode material for the supercapacitor application. The composite of ZnO with FeAl2O4 (FAO) electrode reduces its diffusive characteristics and enhances its capacitive behavior. This leads to improved cycling stability, higher energy (Ed) and enhanced power density (Pd) of the synthesized electrode. The FeAl2O4@ZnO composite demonstrates a high capacitance (Cs) of 1149.2 F g-1 at a sweep rate of 10 mV s- 1 during cyclic voltammetry (CV) analysis, as well as a significant capacitance (1332.7 F g-1) at the provided current density (Cd) of 1 A g-1 during galvanostatic charged discharged (GCD) analysis in the 2 M KOH as electrolytic solution. The nanocomposite Hence, this study suggested that combining zinc with spinel material to form a composite (FeAl2O4@ZnO) exhibited superior performance than the pure materials due to larger surface area, larger active sites, and smaller charge resistance. The electrochemical finding indicates that the nanocomposite works as potential electrode material for the applications of supercapacitor and it can also be utilized in other electrochemical applications.