Fabrication of Supercapacitor Based on Conducting Polyaniline and Graphene Oxide Nanocomposites

This study aims to enhance and develop the properties of materials used as supercapacitors. The synthesis of graphene oxide (GO) was achieved via a modified Hummer’s method, whereas the fabrication of polyaniline (PANI)/GO nanocomposites was conducted utilizing an in situ chemical polymerization technique. Subsequently, the PANI/GO layered films were deposited on fluorine-doped tin oxide (FTO) glass for supercapacitor applications. The materials were analyzed using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and cyclic voltammetry (CV). The experimental results demonstrated that a reaction time of 30 min, along with a weight ratio of aniline (ANI) monomer to GO of 1:1.5, yielded an optimal specific capacitance of 13.30 F/g. The robust electrochemical performance of the PANI/GO electrode may stem from the increased active sites for PANI deposition, attributable to the large surface areas of GO.