A sodium perchlorate-based hybrid electrolyte with high salt-to-water molar ratio for safe 2.5V carbon-based supercapacitor

doi:10.1016/j.ensm.2019.03.016

	A sodium perchlorate-based hybrid electrolyte with high salt-to-water molar ratio for safe 2.5V carbon-based supercapacitor
	Dou, Qingyun 2,3; Lu, Yulan 2,5; Su, Lijun 2,3; Zhang, Xu 2; Lei, Shulai 2; Bu, Xudong 2,6; Liu, Lingyang 2,3; Xiao, Dewei 2; Chen, Jiangtao 2; Shi, Siqi 4
刊名	Energy Storage Materials
	2019-12-01
卷号	23 页码:603-609
关键词	Capacitance Carbon Chlorine compounds Electrolytes Inorganic compounds Molar ratio Sodium compounds Supercapacitor Aqueous electrolyte Electrochemical energy storage devices Electrochemical stabilities Flame retardant properties High specific capacitances Hybrid electrolytes Operational voltage Rate capabilities
ISSN号	2405-8297
DOI	10.1016/j.ensm.2019.03.016
英文摘要	Expanding the electrochemical stability window (ESW) of aqueous electrolytes is receiving great interest because it directly determines the energy density of electrochemical energy storage devices. Super-concentrated aqueous electrolytes (i.e. "water in salt", WIS) with extremely high salt-to-water molar ratios enable substantially reduced water activity, thereby widening ESW. However, such aqueous electrolytes give rise to sluggish ionic transfer, leading to poor rate performance of devices. Here we report a water/organic hybrid electrolyte based on a low-cost sodium perchlorate (NaClO4) salt. The hybrid electrolyte with a salt-to-water-to-acetonitrile molar ratio of 1/1.5/2.4 shows a wide ESW, and exhibits high ionic conductivity, excellent wettability, moisture-tolerant and flame-retardant properties. Such advantages enable a safe carbon-based supercapacitor to operate at 2.5 V with high specific capacitance, and deliver a good stability over 15000 cycles. © 2019 Elsevier B.V.
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000495867200058
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114887]
专题	材料科学与工程学院
作者单位	1.Dalian National Laboratory for Clean Energy, 116000, China; 2.Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, 730000, China; 3.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, China; 4.School of Materials Science and Engineering, Shanghai University, 20444, China; 5.School of Physical Science and Technology, Lanzhou University, 730000, China; 6.School of Material Science and Engineering, Lanzhou University of Technology, 730050, China
推荐引用方式 GB/T 7714	Dou, Qingyun,Lu, Yulan,Su, Lijun,et al. A sodium perchlorate-based hybrid electrolyte with high salt-to-water molar ratio for safe 2.5V carbon-based supercapacitor[J]. Energy Storage Materials,2019,23:603-609.
APA	Dou, Qingyun.,Lu, Yulan.,Su, Lijun.,Zhang, Xu.,Lei, Shulai.,...&Yan, Xingbin.(2019).A sodium perchlorate-based hybrid electrolyte with high salt-to-water molar ratio for safe 2.5V carbon-based supercapacitor.Energy Storage Materials,23,603-609.
MLA	Dou, Qingyun,et al."A sodium perchlorate-based hybrid electrolyte with high salt-to-water molar ratio for safe 2.5V carbon-based supercapacitor".Energy Storage Materials 23(2019):603-609.