Mixed salts of lithium difluoro (oxalate) borate and lithium tetrafluorobotate electrolyte on low-temperature performance for lithium-ion batteries

doi:10.1149/2.0851709jes

IR > 石油化工学院

	Mixed salts of lithium difluoro (oxalate) borate and lithium tetrafluorobotate electrolyte on low-temperature performance for lithium-ion batteries
	Zhao, Qiuping; Zhang, Yu; Tang, Fengjuan; Zhao, Jiachen; Li, Shiyou
	2017
发表期刊	Journal of the Electrochemical Society
ISSN	00134651
卷号	164 期号:9 页码:A1873-A1880
摘要	The finding of appropriate electrolytes and applying them to low-temperature lithium-ion batteries is of special interest. Lithium difluoro (oxalate) borate (LiODFB) and lithium tetrafluorobotate (LiBF4) are promising salts for lithium-ion batteries owing to their unique characteristics. In this work, the electrochemical behaviors of blend salts of LiODFB and LiBF4 with different mole ratio were studied by employment of ethylene carbonate (EC), diethyl carbonate (DEC) and dimethyl sulfite (DMS) as mixed solvents in order to optimize the low-temperature performance for lithium-ion batteries. The results show that the electrolyte system of LiODFB/LiBF4 (1:1, by molar)-EC/DEC/DMS (1:2:1, by volume) is the optimized electrolyte, and the discharge capacity of the electrodes in the optimized electrolyte is 82.5 mAh g-1 at -40°C, maintaining 55.7% of the room temperature capacity and nearly 100% of capacity retention for 50 cycles. The electrolyte exhibits not only excellent film-forming characteristics, but also low impedance of the interface film at low temperature. Especially, the action mechanism of LiODFB, LiBF4 as well as functional solvent on optimization of low-temperature performance is discussed. © 2017 The Electrochemical Society.
关键词	Electric discharges Electrolytes Ethylene Ions Lithium compounds Low temperature properties Oxalic acid Salts Temperature Action mechanisms Capacity retention Diethyl carbonates Discharge capacities Electrochemical behaviors Electrolyte systems Ethylene carbonate Low temperature performance
DOI	10.1149/2.0851709jes
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:000413256400180
出版者	Electrochemical Society Inc.
EI入藏号	20180904834387
EI主题词	Lithium-ion batteries
EI分类号	641.1 Thermodynamics - 701.1 Electricity: Basic Concepts and Phenomena - 702 Electric Batteries and Fuel Cells - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
来源库	Compendex
分类代码	641.1 Thermodynamics - 701.1 Electricity: Basic Concepts and Phenomena - 702 Electric Batteries and Fuel Cells - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
引用统计	被引频次：21[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/114038
专题	石油化工学院
通讯作者	Li, Shiyou
作者单位	Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Gansu, 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	Zhao, Qiuping,Zhang, Yu,Tang, Fengjuan,et al. Mixed salts of lithium difluoro (oxalate) borate and lithium tetrafluorobotate electrolyte on low-temperature performance for lithium-ion batteries[J]. Journal of the Electrochemical Society,2017,164(9):A1873-A1880.
APA	Zhao, Qiuping,Zhang, Yu,Tang, Fengjuan,Zhao, Jiachen,&Li, Shiyou.(2017).Mixed salts of lithium difluoro (oxalate) borate and lithium tetrafluorobotate electrolyte on low-temperature performance for lithium-ion batteries.Journal of the Electrochemical Society,164(9),A1873-A1880.
MLA	Zhao, Qiuping,et al."Mixed salts of lithium difluoro (oxalate) borate and lithium tetrafluorobotate electrolyte on low-temperature performance for lithium-ion batteries".Journal of the Electrochemical Society 164.9(2017):A1873-A1880.