Electrochemical performance of polyaniline-coated γ-MnO2 on carbon cloth as flexible electrode for supercapacitor

doi:10.1016/j.electacta.2022.140146

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	Electrochemical performance of polyaniline-coated γ-MnO2 on carbon cloth as flexible electrode for supercapacitor
	Zhu, Yuanqiang 1,2; Xu, Hui 1,2; Chen, Pengdong 1,2; Bao, Yuanhai 1,2; Jiang, Xudong 1,2; Chen, Yong 1,2
刊名	Electrochimica Acta
	2022-05-01
卷号	413
关键词	Capacitance Carbon Electrochemical electrodes Electrochemical properties Flexible displays Hybrid materials Manganese oxide Scaffolds Solid electrolytes Testing Carbon cloths Electrochemical performance Electrode material Flexible electrodes Flexible supercapacitor Hybrids material Low-costs Ternary composites Ternary hybrid Γ-MnO2
ISSN号	0013-4686
DOI	10.1016/j.electacta.2022.140146
英文摘要	Carbon cloth (CC) based supercapacitor is considered as one of the most promising electrode materials for flexible supercapacitor due to their excellent flexibility and electrochemical properties. In this paper, a low-cost ternary hybrid material polyaniline-coated γ-MnO2/carbon cloth (PANI@γ-MnO2/CC) is synthesized via facile hydrothermal and in-situ electrochemical polymerization reactions for superior supercapacitor electrode materials. Flexible conductive CC can not only be used as a scaffold for the growth of γ-MnO2 and PANI but also can be used as a carbon source for generation γ-MnO2. The structure and electrochemical properties of PANI@γ-MnO2/CC composite are investigated via different testing techniques. The coating PANI layer on the surface of γ-MnO2@CC with a three-dimensional hierarchical structure provides high electroactive surface area and accelerates the ion diffusion and electron transfer. Due to synergistic effects between the components, the flexible PANI@γ-MnO2/CC composite displays a high specific capacitance of 1105 mF cm−2 (371.4 C g−1) at a current density of 1 mA cm−2 in 0.5 M H2SO4 aqueous electrolyte and long cycle stability for 2000 cycles with 86.35%, as well as good rate performance 72.3% capacitance retention from 1 to 10 mA cm−2. Furthermore, flexible asymmetric supercapacitor (FASCs) based on PANI@γ-MnO2/CC and PVA-H2SO4 gel electrolyte have been fabricated and it has shown the energy density of 10.4 mW cm−3 at a power density of 1.5 mWh cm−3. The ease of preparation and excellent energy storage capability indicates that the PANI@γ-MnO2/CC composite could be a promising electrode material for supercapacitor application. © 2022
WOS研究方向	Electrochemistry
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000778889000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157994]
专题	石油化工学院
作者单位	1.Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, China 2.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, China;
推荐引用方式 GB/T 7714	Zhu, Yuanqiang,Xu, Hui,Chen, Pengdong,et al. Electrochemical performance of polyaniline-coated γ-MnO2 on carbon cloth as flexible electrode for supercapacitor[J]. Electrochimica Acta,2022,413.
APA	Zhu, Yuanqiang,Xu, Hui,Chen, Pengdong,Bao, Yuanhai,Jiang, Xudong,&Chen, Yong.(2022).Electrochemical performance of polyaniline-coated γ-MnO2 on carbon cloth as flexible electrode for supercapacitor.Electrochimica Acta,413.
MLA	Zhu, Yuanqiang,et al."Electrochemical performance of polyaniline-coated γ-MnO2 on carbon cloth as flexible electrode for supercapacitor".Electrochimica Acta 413(2022).