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 1,2; Lu, Yulan 1,5; Su, Lijun 1,2; Zhang, Xu 1; Lei, Shulai 1; Bu, Xudong1,6 ; Liu, Lingyang 1,2; Xiao, Dewei 1; Chen, Jiangtao 1; Shi, Siqi 4
	2019-12-01
发表期刊	Energy Storage Materials
ISSN	2405-8297
卷号	23 页码:603-609
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.
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
DOI	10.1016/j.ensm.2019.03.016
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000495867200058
出版者	Elsevier B.V., Netherlands
EI入藏号	20192907206902
EI主题词	Electrolytic capacitors
EI分类号	701.1 Electricity: Basic Concepts and Phenomena - 704.1 Electric Components - 804 Chemical Products Generally - 804.2 Inorganic Compounds
来源库	Compendex
分类代码	701.1 Electricity: Basic Concepts and Phenomena - 704.1 Electric Components - 804 Chemical Products Generally - 804.2 Inorganic Compounds
引用统计	被引频次：96[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/114887
专题	材料科学与工程学院
通讯作者	Yan, Xingbin
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China; 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China; 3.Dalian Natl Lab Clean Energy, Dalian 116000, Peoples R China; 4.Shanghai Univ, Sch Mat Sci & Engn, Shanghai 20444, Peoples R China; 5.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China; 6.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	能源与动力工程学院
通讯作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
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.