Multifunctional imidazolium-based ionic liquid as additive for silicon/carbon lithium ion batteries

doi:10.1016/j.electacta.2020.135990

	Multifunctional imidazolium-based ionic liquid as additive for silicon/carbon lithium ion batteries
	Cai, Yingjun 1,2; Xu, Tinghua 2; von Solms, Nicolas 1; Zhang, Haitao 2; Thomsen, Kaj 1
刊名	ELECTROCHIMICA ACTA
	2020-04-20
卷号	340 页码:8
关键词	Lithium ion batteries Ionic liquid Silicon-carbon anode Solid electrolyte interphase layer
ISSN号	0013-4686
DOI	10.1016/j.electacta.2020.135990
英文摘要	A novel multifunctional ionic liquid additive 1-(3-amino-3-oxopropyl)-3-vinylimidazolium bis(trifluoromethylsulfonyl)amide ([PIVM][TFSA]) is designed to enhance the electrochemical performance of silicon-based lithium ion batteries. Due to its multifunctional groups, this ionic liquid has the potential to improve silicon based lithium ion batteries. The basic group binds water and thereby keeps the formation of hydrogen fluoride (HF) at a low level. The vinyl group of the ionic liquid contributes to the formation of a uniform passivating solid electrolyte interphase (SEI) film in silicon-based lithium ion batteries. The cycle life of the silicon-carbon half-cells with this ionic liquid is improved greatly. After 50 cycles, the capacity retention of half-cells with presence of ionic liquid is obviously higher than that of cells without ionic liquid. Electrochemical methods are used to analyze the effect of the ionic liquid. Scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) are used to detect the structure and components of the SEI layer. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	China Scholarship Council ; Department of Chemical Engineering, Technical University of Denmark ; National Key Research and Development Program of China[2016YFB0100303] ; Major Program of National Natural Science Foundation of China[21890762] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW e JSC011]
WOS关键词	THIN-FILM ANODES ; ELECTROCHEMICAL PERFORMANCE ; COMPOSITE ANODE ; NEGATIVE ELECTRODE ; CARBON COMPOSITE ; RATE CAPABILITY ; GRAPHITE ; NANOPARTICLES ; LIFE
WOS研究方向	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000521531800032
资助机构	China Scholarship Council ; Department of Chemical Engineering, Technical University of Denmark ; National Key Research and Development Program of China ; Major Program of National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/39942]
专题	中国科学院过程工程研究所
通讯作者	Thomsen, Kaj
作者单位	1.Tech Univ Denmark, CERE, Dept Chem & Biochem Engn, Soltofts Plads, DK-2800 Lyngby, Denmark 2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn,State Key Lab Multi, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Cai, Yingjun,Xu, Tinghua,von Solms, Nicolas,et al. Multifunctional imidazolium-based ionic liquid as additive for silicon/carbon lithium ion batteries[J]. ELECTROCHIMICA ACTA,2020,340:8.
APA	Cai, Yingjun,Xu, Tinghua,von Solms, Nicolas,Zhang, Haitao,&Thomsen, Kaj.(2020).Multifunctional imidazolium-based ionic liquid as additive for silicon/carbon lithium ion batteries.ELECTROCHIMICA ACTA,340,8.
MLA	Cai, Yingjun,et al."Multifunctional imidazolium-based ionic liquid as additive for silicon/carbon lithium ion batteries".ELECTROCHIMICA ACTA 340(2020):8.