| A salt-derived solid electrolyte interphase by electroreduction of water-in-salt electrolyte for uniform lithium deposition | |
| Wang, Zhenxing1,2; Sun, Chengguo3; Shi, Ying1; Qi, Fulai1; Wei, Qinwei1,2; Li, Xin1,2; Sun, Zhenhua1,2; An, Baigang3; Li, Feng1,2,3 | |
| Corresponding Author | Li, Feng(fli@imr.ac.cn) |
| 2019-11-01 | |
| Source Publication | JOURNAL OF POWER SOURCES
 |
| ISSN | 0378-7753 |
| Volume | 439Pages:6 |
| Abstract | Notorious growth of dendritic lithium with low Coulombic efficiency causes safety and stability issues, which hinder practical applications. To control the lithium deposition so that one has a dendrite-free lithium metal anode with high Coulombic efficiency is highly desirable but challenging. Here, this work reports a copper substrate covered by a salt-derived solid electrolyte interphase that produced by electroreduction of a highly concentrated water-in-salt electrolyte to realize stable lithium deposition. Quite distinct from the resistive layer comprised principally of solvent-derived organic species (such as lithium alkyl carbonates) that produced in conventional dilute electrolyte, this salt-derived solid electrolyte interphase is rich in inorganic components (mainly Li2SxOy and LiF), which effectively reduce the overpotential and facilitate fast Li+ transport. In addition, a small number of reduced fluorine organic anions -CFx stabilize the space charge to give a uniform distribution of Li+. Such a solid electrolyte interphase on the copper substrate is able to modulate the lithium plating/stripping to produce uniform spherical lithium deposition with no dendrites, and a high Coulombic efficiency (approximate to 98.2%) is achieved. This work provides a unique strategy to enlarge the functions of the lithium salt decompositions on the protection of lithium metal anodes. |
| Keyword | Water-in-salt Solid electrolyte interphase Dendrite-free Li anode Electroreduction Space charge |
| Funding Organization | National Natural Science Foundation of China, China ; MOST, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences, China ; Key Research Program of the Chinese Academy of Sciences, China ; CAS-SAFEA International Partnership Program for Creative Research Teams, China |
| DOI | 10.1016/j.jpowsour.2019.227073 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China, China[51525206] ; National Natural Science Foundation of China, China[51521091] ; MOST, China[2016YFA0200100] ; MOST, China[2016YFB0100100] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA22010602] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences, China[2015150] ; Key Research Program of the Chinese Academy of Sciences, China[KGZD-EW-T06] ; CAS-SAFEA International Partnership Program for Creative Research Teams, China |
| WOS Research Area | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
| WOS Subject | Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000494891700006 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/136819 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Feng |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Univ Sci & Technol Liaoning, Sch Chem Engn, Anshan 114051, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Zhenxing,Sun, Chengguo,Shi, Ying,et al. A salt-derived solid electrolyte interphase by electroreduction of water-in-salt electrolyte for uniform lithium deposition[J]. JOURNAL OF POWER SOURCES,2019,439:6. |
| APA | Wang, Zhenxing.,Sun, Chengguo.,Shi, Ying.,Qi, Fulai.,Wei, Qinwei.,...&Li, Feng.(2019).A salt-derived solid electrolyte interphase by electroreduction of water-in-salt electrolyte for uniform lithium deposition.JOURNAL OF POWER SOURCES,439,6. |
| MLA | Wang, Zhenxing,et al."A salt-derived solid electrolyte interphase by electroreduction of water-in-salt electrolyte for uniform lithium deposition".JOURNAL OF POWER SOURCES 439(2019):6. |
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