CAS OpenIR  > 研究所(批量导入)
Study on the Synthesis of Five 1,2-Dimethylimidazolium Type of Ionic Liquids and Their Application to Li/LiFeO4 Battery as Electrolytes
Alternative TitleActa Chim. Sin.
Cai Yan1; Li Zaijun1; Zhang Hailang1; Fan Xu1; Zhang Suojiang2
2010-05-28
Source PublicationACTA CHIMICA SINICA
ISSN0567-7351
Volume68Issue:10Pages:1017-1022
AbstractWe designed and synthesized five new 1-alkyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)-imide room temperature ionic liquids in the work. Subsequently, these ionic liquids were developed as electrolytes for Li/LiFeO4 batteries to study on effect of the physical properties, interfacial and electrochemical performance by changing the alkyl chain. -butyl, -amyl, -octyl, -isooctyl and -decyl group. The results showed electrochemical windows of all ionic liquid are up to 5.6 V (similar to 0.4 similar to 5.2 V vs Li+/Li). The fact reveals the ionic liquid electrolytes are of excellent electrochemical stability. The ternary electrolyte will form fine solid electrolyte interphase film (SEI) on the surface of metallic lithium electrode in the presence of vinylene carbonate The SEI protects lithium foil to corrosion and enhances the stability of the Li electrode. Ac impedance spectroscopy and cyclic voltammetry analysis further demonstrate the ionic liquid electrolytes have also excellent compatibility with LiFeO4 electrode. Moreover, obvious dependence of the electrochemical properties on the alkyl in the ionic liquid was observed Li/LiFePO4 batteries with butyl-DMimTFSI and amyl-DMimTFSI as electrolytes exhibited better charge/discharge capacity and reversibility than that of other three ionic liquids. Their initial discharge capacity is about to 145 and 152.6 mAh/g and indicates excellent cycle reversibility. For the batteries with the electrolyte-based isooctyl-DMimTFSI ionic liquid, the initial discharge capacity is only 8.3 mAh.g(-1) due to its biggest viscosity However, it added dramatically to 132.4 mAh.g(-1) when 50% (w/w) propylene carbonate was introduced into the ternary electrolyte as diluent.; We designed and synthesized five new 1-alkyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)-imide room temperature ionic liquids in the work. Subsequently, these ionic liquids were developed as electrolytes for Li/LiFeO4 batteries to study on effect of the physical properties, interfacial and electrochemical performance by changing the alkyl chain. -butyl, -amyl, -octyl, -isooctyl and -decyl group. The results showed electrochemical windows of all ionic liquid are up to 5.6 V (similar to 0.4 similar to 5.2 V vs Li+/Li). The fact reveals the ionic liquid electrolytes are of excellent electrochemical stability. The ternary electrolyte will form fine solid electrolyte interphase film (SEI) on the surface of metallic lithium electrode in the presence of vinylene carbonate The SEI protects lithium foil to corrosion and enhances the stability of the Li electrode. Ac impedance spectroscopy and cyclic voltammetry analysis further demonstrate the ionic liquid electrolytes have also excellent compatibility with LiFeO4 electrode. Moreover, obvious dependence of the electrochemical properties on the alkyl in the ionic liquid was observed Li/LiFePO4 batteries with butyl-DMimTFSI and amyl-DMimTFSI as electrolytes exhibited better charge/discharge capacity and reversibility than that of other three ionic liquids. Their initial discharge capacity is about to 145 and 152.6 mAh/g and indicates excellent cycle reversibility. For the batteries with the electrolyte-based isooctyl-DMimTFSI ionic liquid, the initial discharge capacity is only 8.3 mAh.g(-1) due to its biggest viscosity However, it added dramatically to 132.4 mAh.g(-1) when 50% (w/w) propylene carbonate was introduced into the ternary electrolyte as diluent.
KeywordIonic Liquid 1-alky1-2 3-dimethylimidazolium Bis(Trifluoromethane Sulfonyl)Imide Electrolyte Li/lifeo4 Battery
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
URL查看原文
Indexed BySCI
Language英语
WOS KeywordLITHIUM SECONDARY BATTERIES ; LI/LICOO2 CELL ; LI BATTERIES ; RTILS
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000278751500014
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6495
Collection研究所(批量导入)
Affiliation1.Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Cai Yan,Li Zaijun,Zhang Hailang,et al. Study on the Synthesis of Five 1,2-Dimethylimidazolium Type of Ionic Liquids and Their Application to Li/LiFeO4 Battery as Electrolytes[J]. ACTA CHIMICA SINICA,2010,68(10):1017-1022.
APA Cai Yan,Li Zaijun,Zhang Hailang,Fan Xu,&Zhang Suojiang.(2010).Study on the Synthesis of Five 1,2-Dimethylimidazolium Type of Ionic Liquids and Their Application to Li/LiFeO4 Battery as Electrolytes.ACTA CHIMICA SINICA,68(10),1017-1022.
MLA Cai Yan,et al."Study on the Synthesis of Five 1,2-Dimethylimidazolium Type of Ionic Liquids and Their Application to Li/LiFeO4 Battery as Electrolytes".ACTA CHIMICA SINICA 68.10(2010):1017-1022.
Files in This Item:
File Name/Size DocType Version Access License
五种1_烷基_2_3_二甲基咪唑_省略_(812KB) 限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cai Yan]'s Articles
[Li Zaijun]'s Articles
[Zhang Hailang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cai Yan]'s Articles
[Li Zaijun]'s Articles
[Zhang Hailang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cai Yan]'s Articles
[Li Zaijun]'s Articles
[Zhang Hailang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.