Hierarchical Nanocomposites of Polyaniline Nanowire Arrays on Reduced Graphene Oxide Sheets for Supercapacitors

Abstract

Here we reported a novel route to synthesize a hierarchical nanocomposite (PANI-frGO) of polyaniline (PANI) nanowire arrays covalently bonded on reduced graphene oxide (rGO). In this strategy, nitrophenyl groups were initially grafted on rGO via C-C bond, and then reduced to aminophenyl to act as anchor sites for the growth of PANI arrays on rGO. The functionalized process was confirmed by atomic force microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy and thermogravimetric analysis. The electrochemical properties of the PANI-frGO as supercapacitor materials were investigated. The PANI-frGO nanocomposites showed high capacitance of 590 F g−1 at 0.1 A g−1, and had no loss of capacitance after 200 cycles at 2 A g−1. The improved electrochemical performance suggests promising application of the PANI-frGO nanocomposites in high-performance supercapacitors.

Synthesis, Characterization of Polyaniline and Polyaniline Encapsulated Cellulose isolated from Sugarcane Bagasse and its study on Electronic Properties

“…These two set of redox peaks is due to the interconversion of benzenoid form of polyaniline to quinoid form. It is confirmed that emeraldin salt form of polyaniline deposited on the surface of the cellulose nanofiber [17,18].…”

Fabrication of graphene foam supported carbon nanotube/polyaniline hybrids for high-performance supercapacitor applications

“…Recently, polyaniline (PANI) has drawn much attention in electrochemical studies owing to its excellent properties such as low cost, ability to easily form various nanostructures, good biocompatibility and environmental stability [19,20]. However, PANI suffers from the mechanical degradation problem caused by swelling and shrinkage during the doping and dedoping process [21,22], leading to limited cycling life of PANI-based supercapacitors. In order to overcome these limitations, much effort has been devoted to preparing hybrid electrodes by combining PANI with other nanomaterials.…”

Review—Critical Considerations of High Quality Graphene Synthesized by Plasma-Enhanced Chemical Vapor Deposition for Electronic and Energy Storage Devices

“…147 Among various energy storage devices, supercapacitor has been extensively studied to be utilized as power sources because of high power density, long cycle life, high stability, and rapid charging/discharging rate. [148][149][150][151] The superb characteristic are widely used in energy management, memory back-up systems, consumer electronics, and industrial power. 149,152,153 The combination of high energy density fuel cells or batteries and high power density of supercapacitors to be used in various applications such as starters, generators, and electric braking assistance.…”

“…[148][149][150][151] The superb characteristic are widely used in energy management, memory back-up systems, consumer electronics, and industrial power. 149,152,153 The combination of high energy density fuel cells or batteries and high power density of supercapacitors to be used in various applications such as starters, generators, and electric braking assistance. 154 The 3D graphene and vertically oriented few-layer graphene (VFG) nanocup (3D VFG) was successfully demonstrated by Qi et al 155 using PECVD.…”