Fabrication of PANI/TRGO‐MnO₂ Hybrid as Working Electrode for Electrochemical Capacitor Using Thermal–Chemical Technique

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

ABSTRACT In this project, efficient polyaniline/thermally reduced graphene oxide–manganese oxide (PANI/TRGO‐MnO 2 ) hybrid is synthesized by thermal–chemical technique and applied as working electrode materials. The properties of the pure PANI, TRGO‐MnO , PANI/TRGO‐MnO hybrids are characterized via field emission scanning electron microscopy (FESEM), X‐ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), Raman, UV–visible spectroscopy. fibrous PANI particles grown on both sides MnO nanoparticles (NPs) uniformly diffused in TRGO. Raman results show that average size crystallites (La) obtained at 17.8 27.4 nm for hybrids, respectively. electrochemical as‐prepared electrodes evaluated cyclic voltammetry (CV), impedance spectroscopy, galvanostatic charge–discharge. CV plots illustrate responses similar to a pseudocapacitive behavior without polarization. prepared indicates greatly improved specific capacitance 1027.27 F.g −1 compared (581.05 (791.39 1 molar sulfuric acid (1 M H SO 4 electrolyte solution. Furthermore, solution resistance, charge transfer internal resistance be 5.2, 13.1, 20.9 Ω high‐performance hybrid,

Language: Английский

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One-step electrochemical synthesis of FTO/MnO2-graphene composite for electrochemical energy storage

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 73, P. 109228 - 109228

Published: Oct. 13, 2023

Language: Английский

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Synergistic Analysis of Hydrothermally Synthesized PANI-GO: MnO2/MoO3 Nanocomposites for Enhanced Structural and Supercapacitor Performance

International Research Journal of Multidisciplinary Technovation, Journal Year: 2024, Volume and Issue: unknown, P. 40 - 50

Published: Feb. 15, 2024

This study explores the potential of PANI-GO:MnO2/MoO3 nanocomposites as high-performance supercapacitors, addressing increasing energy storage demands in portable electronics devices. By varying amount polyaniline (PANI) alongside a ternary composite GO/MnO2/MoO3, present investigates their combined influence on electrochemical performance. XRD analysis confirmed hexagonal phase with an average particle size 19 nm, and FTIR showed functional groups associated title compound. FESEM images demonstrated leaf-like structures, EDAX spectrum presence Mn Mo elements as-prepared samples. Electrochemical maximum capacitance 596 F/g. The unique blend graphene, polyaniline, metal oxides these holds great promise for advanced supercapacitors. research aims to understand how different levels impact overall composition, providing insights into synergies between components effects capabilities.

Language: Английский

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Porous carbohydrate–graphene aerogels synthesized by green method as electroactive supercapacitor materials

Heliyon, Journal Year: 2024, Volume and Issue: 10(8), P. e29852 - e29852

Published: April 1, 2024

Various graphene derivatives have been known as electrode-active materials for fabricating supercapacitors. Interconnected networks with adjustable porous structures, i.e., 3D aerogels (GAs), can control the restacking of sheets very well and, thus, lead to enhanced performance In this study, carbohydrates (sucrose and fructose) were used make two types carbohydrates–graphene aerogels, sucrose-graphene aerogel (SCR) fructose-graphene (FRC). Carbohydrates operate a cross-linking reductant agent. Voltammograms supercapacitor electrodes based on FRC SCR indicate more rectangular shape larger area superior current than GA (graphene without using carbohydrates) electrode. They better capacitive performance, electron transportation ability, higher specific capacitance (CS) values GA. The FRC, SCR, demonstrate CS 257.2 F g -1, 221.0 95 -1 at ѵ = 10 mV.s-1, respectively. Improvement in electrodes, comparison GA, is attributed interconnected feature their structures suitable available surface area, which facilitates ion throughout networks. These supercapacitors also show excellent stability after recording 5,000 consecutive voltammograms.

Language: Английский

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Enhanced electrochemical performance of nickel cobalt sulfide microspheres for high energy symmetric supercapacitors

Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 325, P. 129797 - 129797

Published: Aug. 2, 2024

Language: Английский

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