A high performance redox-mediated electrolyte for improving properties of metal oxides based pseudocapacitive materials

doi:10.1016/j.electacta.2015.10.161

	A high performance redox-mediated electrolyte for improving properties of metal oxides based pseudocapacitive materials
	Han, Wei1 ; Kong, Ling-Bin1,2 ; Liu, Mao-Cheng2 ; Wang, Dan2 ; Li, Jia-Jia 2; Kang, Long 2
	2015-12-20
发表期刊	ELECTROCHIMICA ACTA
ISSN	0013-4686
卷号	186 页码:478-485
摘要	A novel redox-mediated aqueous electrolyte is prepared by adding sodium persulfate (Na2S2O8) into KOH alkaline electrolyte for the application in most metal oxide based supercapacitors. The electrochemical behaviors of nickel oxide (NiO) electrode in 2 M KOH and 2 M KOH containing different concentration of Na2S2O8 electrolytes, respectively, were characterized by cyclic voltammetry and electrochemical impedance spectroscopy methods. The results indicate that the reaction mechanism of NiO electrode in Na2S2O8 mixed electrolytes appears to be the reversible redox of Ni2+ to Ni3+ on two different channels, which is different with that in KOH electrolyte. Charge-discharge experiments show that the discharge ability of the NiO electrode in redox electrolyte is excellent. When added Na2S2O8 into KOH electrolyte, the charge time is shorted and the discharge time is increased sharply. The specific capacitance was up to 6317.5 F g(-1) at 0.5 A g(-1) in mixed 2 M KOH and 0.03 M Na2S2O8, more than 100% coulombic efficiency. Fortunately, this new redox-mediated aqueous electrolyte not only suitable for the metal oxide based electrode, but also have much effect to the metal sulfide, vanadate, and phosphate electrode et al. (C) 2015 Elsevier Ltd. All rights reserved.
关键词	Redox electrolyte Sodium persulfate Supercapacitor
DOI	10.1016/j.electacta.2015.10.161
收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China[51362018][21163010]
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000366019700061
出版者	PERGAMON-ELSEVIER SCIENCE LTD
EI入藏号	20154701562683
EI主题词	Sodium compounds
EI分类号	531.2 Metallography - 701.1 Electricity: Basic Concepts and Phenomena - 702 Electric Batteries and Fuel Cells - 704.1 Electric Components - 801 Chemistry - 801.4.1 Electrochemistry - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.2 Inorganic Compounds
引用统计	被引频次：14[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/33899
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院能源与动力工程学院土木工程学院
通讯作者	Kong, Ling-Bin
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 材料科学与工程学院
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Han, Wei,Kong, Ling-Bin,Liu, Mao-Cheng,et al. A high performance redox-mediated electrolyte for improving properties of metal oxides based pseudocapacitive materials[J]. ELECTROCHIMICA ACTA,2015,186:478-485.
APA	Han, Wei,Kong, Ling-Bin,Liu, Mao-Cheng,Wang, Dan,Li, Jia-Jia,&Kang, Long.(2015).A high performance redox-mediated electrolyte for improving properties of metal oxides based pseudocapacitive materials.ELECTROCHIMICA ACTA,186,478-485.
MLA	Han, Wei,et al."A high performance redox-mediated electrolyte for improving properties of metal oxides based pseudocapacitive materials".ELECTROCHIMICA ACTA 186(2015):478-485.

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