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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
Source PublicationJOURNAL OF POWER SOURCES
Volume334Pages:58-64
AbstractTwo 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.
SubtypeArticle
KeywordElectrolyte Fluorosilane High Voltage Thermal Stability Lithium-ion Batteries
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jpowsour.2016.10.009
WOS Subject ExtendedChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS KeywordFLUORINATED ELECTROLYTES ; ELECTROCHEMICAL PROPERTIES ; FLUOROETHYLENE CARBONATE ; POLYMER ELECTROLYTES ; CATHODE MATERIALS ; RECENT PROGRESS ; PERFORMANCE ; STABILITY ; LICOO2 ; METHYLPHOSPHONATE
Indexed BySCI
Language英语
Funding OrganizationK. 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 SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000387526100008
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/13974
Collection中国科学院广州能源研究所
AffiliationChinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
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.
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