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

doi:10.1002/aenm.201903843

IMR OpenIR

	An Anion-Tuned Solid Electrolyte Interphase with Fast Ion Transfer Kinetics for Stable Lithium Anodes
	Wang, Zhenxing 1,2; Qi, Fulai 1,2; Yin, Lichang 1; Shi, Ying 1,2; Sun, Chengguo 3; An, Baigang 3; Cheng, Hui-Ming 1,4; Li, Feng 1,2
通讯作者	Li, Feng(fli@imr.ac.cn)
	2020-02-17
发表期刊	ADVANCED ENERGY MATERIALS
ISSN	1614-6832
卷号	10 期号:14 页码:9
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.
关键词	anions energy barriers lithium metal anodes solid electrolyte interphase solvation sheaths
资助者	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
DOI	10.1002/aenm.201903843
收录类别	SCI
语种	英语
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
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000513651100001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：274[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/137554
专题	中国科学院金属研究所
通讯作者	Li, Feng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Univ Sci & Technol Liaoning, Sch Chem Engn, Anshan 114051, Peoples R China 4.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen Geim Graphene Ctr, Shenzhen 518055, 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.