Synthesis, Characterization and Electrochemical Properties of 4‐Azidobutylferrocene‐Grafted Reduced Graphene Oxide‐Polyaniline Nanocomposite for Supercapacitor Applications

Abstract

Abstract Reduced graphene oxide (rGO) is grafted through [1,2] cycloaddition reaction with 4‐azidobutylferrocene (AzFc) and its nanocomposite with polyaniline (PANI) is prepared to be applied as a new battery‐type supercapacitor material. The morphology and composition of 4‐azidobutylferrocene/reduced graphene oxide/polyaniline nanocomposite (AzFc/rGO/PANI) are studied by X‐ray diffraction (XRD), Fourier‐transform infrared (FT‐IR) spectroscopy, scanning electron microscopy (SEM) and energy‐dispersive X‐ray (EDX) spectroscopy. The electrochemical performance of nanocomposite material was studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge‐discharge (GCD) techniques in 1 M H 2 SO 4 as the electrolyte. The charge storage capacity of 14, 70 and 95 mAh g −1 are obtained for reduced graphene oxide, 4‐azidobutylferrocene/reduced graphene oxide, and 4‐azidobutylferrocene/reduced graphene oxide/polyaniline nanocomposite at a current density of 14 A g −1 , respectively. The 4‐azidobutylferrocene/reduced graphene oxide/polyaniline nanocomposite as a promising new battery‐type supercapacitor electrode material shows retention time of 89% after 2000 cycle of cyclic voltammetry.