Synthesis of γ-MnO2/PANI Composites for Supercapacitor Application in Acidic Electrolyte

doi:10.1149/1945-7111/abef82

IR > 石油化工学院

	Synthesis of γ-MnO2/PANI Composites for Supercapacitor Application in Acidic Electrolyte
	Zhu, Yuanqiang; Xu, Hui; Tang, Jing; Jiang, Xudong; Bao, Yuanhai; Chen, Yong
	2021-03-01
发表期刊	Journal of the Electrochemical Society
ISSN	0013-4651
卷号	168 期号:3
摘要	In this paper, γ-MnO2 was prepared via simple hydrothermal method and chosen to compound γ-MnO2/polyaniline (PANI) composite electrode by in situ polymerization. The electrochemical performances of as-prepared samples were explored in acidic and neutral medium, respectively. And influenced its effects such as the different additions of composites, scan rates, and current densities in 0.5 M H2SO4 electrolyte were further investigated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), electrochemical impedance spectroscopy (EIS), respectively. The good capactive behaviours indicated that the γ-MnO2 in the conductive matrix of PANI restrains them from dissolution in acidic electrolyte, and PANI itself affords an additional electrochemical activity to the composite. A asymmetric supercapacitor was fabricated using γ-MnO2/PANI as the positive electrode and activated carbon (AC) as the negative electrode. It displayed good capacitance performance of 232.1 F g-1 and high energy density 66.4 Wh kg-1 at a power density of 350.1 W Kg-1, as well as good cycling life (maintaining 78.65% initial capacitance after 3000 cycles). The enhanced electrochemical performances implie that the γ-MnO2/PANI composite can be potentially applied in superca-pacitors. © 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
关键词	Capacitance Cyclic voltammetry Electric discharges Electrochemical impedance spectroscopy Electrodes Electrolytic capacitors Manganese oxide Sulfuric acid Supercapacitor Asymmetric supercapacitor Capacitance performance Electrochemical activities Electrochemical performance Galvanostatic charge discharges High energy densities In-situ polymerization Supercapacitor application
DOI	10.1149/1945-7111/abef82
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Electrochemistry ; Materials Science
WOS类目	Electrochemistry ; Materials Science, Coatings & Films
WOS记录号	WOS:000636146000001
出版者	IOP Publishing Ltd
EI入藏号	20211610234105
EI主题词	Electrolytes
EI分类号	701.1 Electricity: Basic Concepts and Phenomena ; 704.1 Electric Components ; 801 Chemistry ; 801.4.1 Electrochemistry ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds
来源库	WOS
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148449
专题	石油化工学院
通讯作者	Xu, Hui; Chen, Yong
作者单位	Lanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Peoples R China
第一作者单位	石油化工学院
通讯作者单位	石油化工学院
第一作者的第一单位	石油化工学院
推荐引用方式 GB/T 7714	Zhu, Yuanqiang,Xu, Hui,Tang, Jing,et al. Synthesis of γ-MnO2/PANI Composites for Supercapacitor Application in Acidic Electrolyte[J]. Journal of the Electrochemical Society,2021,168(3).
APA	Zhu, Yuanqiang,Xu, Hui,Tang, Jing,Jiang, Xudong,Bao, Yuanhai,&Chen, Yong.(2021).Synthesis of γ-MnO2/PANI Composites for Supercapacitor Application in Acidic Electrolyte.Journal of the Electrochemical Society,168(3).
MLA	Zhu, Yuanqiang,et al."Synthesis of γ-MnO2/PANI Composites for Supercapacitor Application in Acidic Electrolyte".Journal of the Electrochemical Society 168.3(2021).