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Vinyl-functionalized imidazolium ionic liquids as new electrolyte additives for high-voltage Li-ion batteries
Wang, ZhongNi1,2; Cai, YingJun1; Wang, ZhiHua1; Chen, ShiMou1; Lu, XingMei1; Zhang, SuoJiang1
2013-11-01
Source PublicationJOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume17Issue:11Pages:2839-2848
AbstractFour functionalized ionic liquids based on imidazolium cations with vinyl or alllyl group and TFSI- anion were synthesized as electrolyte additives for high-voltage Li-ion battery to stabilize carbonate-based electrolytes on the surface of 5 V class cathode materials. The electrochemical behaviors and surface morphology of LiNi0.5Mn1.5O4 cathode had been investigated by cyclic voltammetry, charge-discharge test, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM), respectively. Cycle life and rate performance of the Li/LiNi0.5Mn1.5O4 cells containing 1.2 M LiPF6 in ethylene carbonate/ethyl methyl carbonate can be improved by adding 1-allyl-3-vinyl imidazolium bis(trifluoromethanesulphonyl)imide ([AVIm][TFSI]). The addition of 3 wt.% [AVIm][TFSI] results in high discharge capacity of above 130 mAh g(-1). Surface analysis of the cathode material (XPS and SEM) suggested that a stable and compact polymer film was formed on the LiNi0.5Mn1.5O4 cathode by electroinitiated polymerization of imidazolium cation with vinyl and allyl group.
KeywordIonic Liquid Additive Electrolyte Electroinitiated Polymerization High-voltage Li-ion Battery
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordLINI0.5MN1.5O4 ; SURFACE ; OXIDE ; POLYMERIZATION ; BEHAVIOR ; CARBON ; CELLS ; SALTS
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000325615000011
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13683
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Coll Chem & Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, ZhongNi,Cai, YingJun,Wang, ZhiHua,et al. Vinyl-functionalized imidazolium ionic liquids as new electrolyte additives for high-voltage Li-ion batteries[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2013,17(11):2839-2848.
APA Wang, ZhongNi,Cai, YingJun,Wang, ZhiHua,Chen, ShiMou,Lu, XingMei,&Zhang, SuoJiang.(2013).Vinyl-functionalized imidazolium ionic liquids as new electrolyte additives for high-voltage Li-ion batteries.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,17(11),2839-2848.
MLA Wang, ZhongNi,et al."Vinyl-functionalized imidazolium ionic liquids as new electrolyte additives for high-voltage Li-ion batteries".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 17.11(2013):2839-2848.
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