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Effects of electrolyte additive on the electrochemical performance of Si/C anode for lithium-ion batteries
Wang, Jianping; Zhang, Lan; Zhang, Haitao
2018-11-01
Source PublicationIONICS
ISSN0947-7047
Volume24Issue:11Pages:3691-3698
Abstract

Additives play critical roles on the performances of electrolytes. Vinyl tris(2-methoxyethoxy) silane (VTMS) was utilized as additive in the ethylene carbonate (EC)/ethyl methyl carbonate (EMC) electrolyte. Scanning electron microscopy (SEM) was used to examine the morphological evolution of electrodes after cycling. The morphology of the SEI film for Si/C electrode was observed by transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectra (EIS) techniques were employed to understand the effect of electrolytes containingVTMS on the formation of the SEI layer. Our experiments reveal that the capacity and cyclability of Si/C anode are improved due to formation of a stable SEI on the anode surface. These behaviors are confirmed by constant current charge-discharge and electrochemical impedance spectra (EIS) study. In particular, 5wt.% VTMS in EC:DEC (3:7wt.%) shows the most optimal reversible capacity and best cycle stability. Such a performance can be attributed to the formation of a more flexible SEI containing Li2CO3, LiF, and organosilicone compounds, which can reduce further reduction of electrolyte.

KeywordAdditives Silicon Graphite Composite Anode Electrolytes Vinyl Tris(2-methoxyethoxy) Silane Electrochemical Performance
DOI10.1007/s11581-018-2682-4
Language英语
WOS KeywordThin-film Electrode ; Fluoroethylene Carbonate ; Rechargeable Batteries ; Amorphous-silicon ; Graphite Anodes ; Composite ; Silane ; Binder ; Efficiency ; Solvents
Funding ProjectNational Key Research and Development Program of China[2016YFB0100303] ; International Cooperation and Exchange of the National Natural Science Foundation of China[51561145020] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA09010103] ; National Natural Science Foundation of China[21706261] ; Beijing Natural Science Foundation[L172045] ; Ford-China University Research Program, National Science Foundation of China[21506197] ; Ford-China University Research Program, National Science Foundation of China[21646011]
WOS Research AreaChemistry ; Electrochemistry ; Physics
WOS SubjectChemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
Funding OrganizationNational Key Research and Development Program of China ; International Cooperation and Exchange of the National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Ford-China University Research Program, National Science Foundation of China
WOS IDWOS:000447736300037
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26198
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Haitao
AffiliationChinese Acad Sci, CAS Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Jianping,Zhang, Lan,Zhang, Haitao. Effects of electrolyte additive on the electrochemical performance of Si/C anode for lithium-ion batteries[J]. IONICS,2018,24(11):3691-3698.
APA Wang, Jianping,Zhang, Lan,&Zhang, Haitao.(2018).Effects of electrolyte additive on the electrochemical performance of Si/C anode for lithium-ion batteries.IONICS,24(11),3691-3698.
MLA Wang, Jianping,et al."Effects of electrolyte additive on the electrochemical performance of Si/C anode for lithium-ion batteries".IONICS 24.11(2018):3691-3698.
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