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Published in: Journal of Materials Science: Materials in Electronics 20/2021

24-09-2021

Preparation of ternary composite CF@γ-MnO2/PANI material in electrochemical supercapacitors

Authors: Yuanqiang Zhu, Hui Xu, Jing Tang, Xudong Jiang, Yuanhai Bao, Yong Chen

Published in: Journal of Materials Science: Materials in Electronics | Issue 20/2021

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Abstract

In this paper, a ternary hybrid material carbon fiber/manganese dioxide/polyaniline (CF@γ-MnO2/PANI) is synthesized for its utility in supercapacitor application. γ-MnO2 nanoparticles are loaded on the surface of CF under hydrothermal conditions to prepare CF@γ-MnO2. Subsequently, PANI in situ polymerized on the surface of CF@γ-MnO2 to form CF@γ-MnO2/PANI ternary composite. The electrochemical performance of CF@γ-MnO2/PANI is investigated using cyclic voltammetry (CV), galvanostatic charge–discharge measurement (GCD), and electrochemical impedance spectroscopy (EIS). Compared with CF/PANI and PANI, the as-prepared ternary hybrid material exhibits the highest capacitance of 654.3 F g−1 at a current density of 1 A g−1, its rate performance is 78.1% (10 A g−1), and 75.94% of the initial capacitance after 4000 charge–discharge cycles. The asymmetric supercapacitor shows a specific capacitance of 260 F g −1 and high energy density 30.9 Wh kg−1 at a power density of 750 W kg−1, good cycling stability by maintaining 73.2% initial capacitance after 5000 cycles. The good capacitive behaviors demonstrated that the low-cost CF provides an excellent base for γ-MnO2 and PANI. The nanoparticles γ-MnO2 is supported on the surface of CF and coated by PANI, which effectively improves the utilization rate of MnO2 and PANI. It could be a promising material for supercapacitors applications.

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Metadata
Title
Preparation of ternary composite CF@γ-MnO2/PANI material in electrochemical supercapacitors
Authors
Yuanqiang Zhu
Hui Xu
Jing Tang
Xudong Jiang
Yuanhai Bao
Yong Chen
Publication date
24-09-2021
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 20/2021
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-021-06989-x

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