An Anion-Tuned Solid Electrolyte Interphase with Fast Ion Transfer Kinetics for Stable Lithium Anodes

doi:10.1002/aenm.201903843

CORC > 金属研究所 > 中国科学院金属研究所

	An Anion-Tuned Solid Electrolyte Interphase with Fast Ion Transfer Kinetics for Stable Lithium Anodes
	Wang, Zhenxing 1,4; Qi, Fulai 1,4; Yin, Lichang 4; Shi, Ying 1,4; Sun, Chengguo 3; An, Baigang 3; Cheng, Hui-Ming 2,4; Li, Feng 1,4
刊名	ADVANCED ENERGY MATERIALS
	2020-02-17
卷号	10 期号:14 页码:9
关键词	anions energy barriers lithium metal anodes solid electrolyte interphase solvation sheaths
ISSN号	1614-6832
DOI	10.1002/aenm.201903843
通讯作者	Li, Feng(fli@imr.ac.cn)
英文摘要	The spatial distribution and transport characteristics of lithium ions (Li+) in the electrochemical interface region of a lithium anode in a lithium ion battery directly determine Li+ deposition behavior. The regulation of the Li+ solvation sheath on the solid electrolyte interphase (SEI) by electrolyte chemistry is key but challenging. Here, 1 m lithium trifluoroacetate (LiTFA) is induced to the electrolyte to regulate the Li+ solvation sheath, which significantly suppresses Li dendrite formation and enables a high Coulombic efficiency of 98.8% over 500 cycles. With its strong coordination between the carbonyl groups (C(sic)O) and Li+, TFA(-) modulates the environment of the Li+ solvation sheath and facilitates fast desolvation kinetics. In addition, due to relatively smaller lowest unoccupied molecular orbital energy than solvents, TFA(-) has a preferential reduction to produce a stable SEI with uniform distribution of LiF and Li2O. Such stable SEI effectively reduces the energy barrier for Li+ diffusion, contributing to low nucleation overpotential, fast ion transfer kinetics, and uniform Li+ deposition with high cycling stability. This work provides an alternative insight into the design of interface chemistry in terms of regulating anions in the Li+ solvation sheath. It is anticipated that this anion-tuned strategy will pave the way to construct stable SEIs for other battery systems.
资助项目	National Natural Science Foundation of China[51525206] ; National Natural Science Foundation of China[51972312] ; National Natural Science Foundation of China[51472249] ; National Natural Science Foundation of China[51902316] ; Ministry of Science and Technology of the People's Republic of China[2016YFA0200100] ; Ministry of Science and Technology of the People's Republic of China[2016YFB0100100] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22010602] ; Key Research Program of the Chinese Academy of Sciences[KGZD-EW-T06] ; Bureau of Industry and Information Technology of Shenzhen for the 2017 Graphene Manufacturing Innovation Center Project[201901171523]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000513651100001
资助机构	National Natural Science Foundation of China ; Ministry of Science and Technology of the People's Republic of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Bureau of Industry and Information Technology of Shenzhen for the 2017 Graphene Manufacturing Innovation Center Project
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137553]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Feng
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen Geim Graphene Ctr, Shenzhen 518055, Peoples R China 3.Univ Sci & Technol Liaoning, Sch Chem Engn, Anshan 114051, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhenxing,Qi, Fulai,Yin, Lichang,et al. An Anion-Tuned Solid Electrolyte Interphase with Fast Ion Transfer Kinetics for Stable Lithium Anodes[J]. ADVANCED ENERGY MATERIALS,2020,10(14):9.
APA	Wang, Zhenxing.,Qi, Fulai.,Yin, Lichang.,Shi, Ying.,Sun, Chengguo.,...&Li, Feng.(2020).An Anion-Tuned Solid Electrolyte Interphase with Fast Ion Transfer Kinetics for Stable Lithium Anodes.ADVANCED ENERGY MATERIALS,10(14),9.
MLA	Wang, Zhenxing,et al."An Anion-Tuned Solid Electrolyte Interphase with Fast Ion Transfer Kinetics for Stable Lithium Anodes".ADVANCED ENERGY MATERIALS 10.14(2020):9.