Synthesis and characterization of ZnCo2O4 nanocomposites with enhanced electrochemical features for supercapacitor applications

Supercapacitors have recently emerged as a promising alternative to conventional batteries due to their improved energy storage capabilities. The optical, electrochemical, and structural properties of ZnCo2O4 nanocomposites produced by hydrothermal synthesis are detailed in this study. In order to study the physicochemical properties of the synthesized goods, the created nanocomposite samples were analyzed using XRD, FTIR, UV-Vis, SEM with EDAX, HR-TEM, BET, XPS, and charge storage potential. Crystallite size was found to be inversely proportional to increasing range of 5.01 nm to 10.62 nm in the XRD data, which compared the cubic structure. Electron microscopy and high-resolution transmission electron microscopy (HR-TEM) indicated a morphological shift indicative of improved electrochemical capabilities. The absorption research showed that different molar ratios were successful in increasing the optical bandgap from zero to 1.93 eV, whereas functional component adsorption lowered it from 2.35 eV. A maximum specific capacitance of 383.3 Fg(-1) was determined by the electrochemical research, which indicated an inherent pseudo capacitance. Experimental results show that the ZnCo2O4 nanocomposite can effectively store charges, which is in line with expectations given its high capacitance and very inexpensive production.