The Controllable Ratio of the Polyaniline-Needle-Shaped Manganese Dioxide for the High-Performance Supercapacitor Application.
Nanomaterials (Basel, Switzerland)(2022)
Abstract
The nanohybrid development of metal oxide/conducting polymer as an energy storage material is an active research area, because of the device stability, conductive behavior, and easy fabrication. Herein, needle-like MnO was coupled with polyaniline fabricated through chemical polymerization followed by the hydrothermal process. The characterization results show that MnO/polyaniline exhibited a needle-like morphology. Different characterization techniques such as X-ray diffraction patterns and scanning electron microscopy confirmed the formation of the MnO/polyaniline nanohybrids. The electrochemical performance, including cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), specific capacitance (C), and cyclic stability, was examined using a three-electrode assembly cell. The optimized electrode displayed a C of 522.20 F g at a current load of 1.0 A g compared with the other electrodes. The developed synergism during MnO/polyaniline fabrication provided enhanced conductive channels and stability during the charge-discharge process.
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Key words
Pani-MnO2,charge–discharge,cyclic stability,supercapacitor
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