Fluorosilane compounds with oligo(ethylene oxide) substituent as safe electrolyte solvents for high-voltage lithium-ion batteries

doi:10.1016/j.jpowsour.2016.10.009

GIEC OpenIR > 中国科学院广州能源研究所

	Fluorosilane compounds with oligo(ethylene oxide) substituent as safe electrolyte solvents for high-voltage lithium-ion batteries
	Wang, Jinglun; Mai, Yongjin; Luo, Hao; Yan, Xiaodan; Zhang, Lingzhi
	2016-12-01
发表期刊	JOURNAL OF POWER SOURCES
卷号	334 页码:58-64
摘要	Two fluorosilanes with oligo(ethylene oxide) unites were synthesized through hydrosilylation of chlorosilane with allyl substituted oligo(ethylene oxide) ether followed by fluorination with potassium fluoride. The synthesized fluorosilane compounds exhibited lower viscosity, higher dielectric constant and higher oxidation potential, compared with their non-fluorination counterparts. Difluoro(3-(2-(2-methoxyethoxy)ethoxy)propyl)methylsilane (DFSM2), one of the two compounds, was evaluated as high-voltage and thermal stable electrolyte co-solvent with the conventional carbonate-based electrolytes. Using an optimized electrolyte of 1M LiPF6 in EC/DFSM2/EMC (2/3/5 in vol.) with addition of 5 wt% fluoroethylene carbonate (FEC), high-voltage LiCoO2(LCO)/graphite full cell displayed outstanding cycling stability of 92.5% capacity retention after 135 cycles at 4.4 V upper cutoff voltage. Characterized by differential scanning calorimetry (DSC) analysis, the DFSM2-based electrolyte demonstrated higher thermal stability with lithiated graphite anode and delithiated LCO cathode, thus better safety feature compared with the conventional electrolyte. (C) 2016 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Electrolyte Fluorosilane High Voltage Thermal Stability Lithium-ion Batteries
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.jpowsour.2016.10.009
研究领域[WOS]	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
关键词[WOS]	FLUORINATED ELECTROLYTES ; ELECTROCHEMICAL PROPERTIES ; FLUOROETHYLENE CARBONATE ; POLYMER ELECTROLYTES ; CATHODE MATERIALS ; RECENT PROGRESS ; PERFORMANCE ; STABILITY ; LICOO2 ; METHYLPHOSPHONATE
收录类别	SCI
语种	英语
项目资助者	K. C. Wong Education Foundation, Guangdong Provincial Project for Science Technology(2014A050503050/2015B010135008) ; Guangzhou Municipal Project for Science Technology(2014Y2-00012/201509010018) ; National Natural Science Foundation of China(21573239)
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000387526100008
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/13974
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Wang, Jinglun,Mai, Yongjin,Luo, Hao,et al. Fluorosilane compounds with oligo(ethylene oxide) substituent as safe electrolyte solvents for high-voltage lithium-ion batteries[J]. JOURNAL OF POWER SOURCES,2016,334:58-64.
APA	Wang, Jinglun,Mai, Yongjin,Luo, Hao,Yan, Xiaodan,&Zhang, Lingzhi.(2016).Fluorosilane compounds with oligo(ethylene oxide) substituent as safe electrolyte solvents for high-voltage lithium-ion batteries.JOURNAL OF POWER SOURCES,334,58-64.
MLA	Wang, Jinglun,et al."Fluorosilane compounds with oligo(ethylene oxide) substituent as safe electrolyte solvents for high-voltage lithium-ion batteries".JOURNAL OF POWER SOURCES 334(2016):58-64.