Advanced composite material for high-performance supercapacitors: integrating graphene oxide and barium chromate

Abstract

Graphene oxide-based Barium chromate (BaCr2O4@GO) composites were successfully synthesized through sonication assisted by a hydrothermal process designed for supercapacitor applications. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and morphological analyses were employed to characterize the nanostructured composites. The XRD and FTIR results reveal that the GO nanoparticles are arranged in a honeycomb-like configuration. Moreover, the TEM images reveal the presence of cauliflower-like structures in the morphology of the composites, which is attributed to the effective intercalation of GO during the thermal reduction process. The electrochemical properties of the nanocomposite were compared to those reported in previous studies on metal chromite materials aimed at enhancing supercapacity applications. The analysis of Galvanostatic Charge-Discharge (GCD) data indicates a significant increase in power density values from 292 W kg−1 to 495.5 W kg−1 for the Nanocomposites. The ability to achieve a balance between enhanced power density and efficient ion transport positions the -nanocomposites as a valuable candidate for advancing the performance of supercapacitors.