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Unique double-layer solid electrolyte interphase formed with fluorinated ether-based electrolytes for high-voltage lithium metal batteries

文献类型：期刊论文

作者Wang, Ruo2,3; Li, Jiawei4; Han, Bing2; Wang, Qingrong2; Ke, Ruohong2; Zhang, Tong2; Ao, Xiaohu5; Zhang, Guangzhao2; Liu, Zhongbo5; Qian, Yunxian5
刊名JOURNAL OF ENERGY CHEMISTRY
出版日期2024
卷号88页码:532-542
ISSN号2095-4956
关键词Lithium metal batteries High-voltage layered oxides Fluorinated ether-based electrolytes Solid electrolyte interphase Cathode electrolyte interphase
DOI10.1016/j.jechem.2023.10.002
通讯作者Zhang, Guangzhao(zhanggz@sustech.edu.cn) ; Lynch, Iseult(i.lynch@bham.ac.uk) ; Wang, Jun(wangj9@sustech.edu.cn) ; Deng, Yonghong(yhdeng08@163.com)
英文摘要Li metal batteries using high-voltage layered oxides cathodes are of particular interest due to their high energy density. However, they suffer from short lifespan and extreme safety concerns, which are attributed to the degradation of layered oxides and the decomposition of electrolyte at high voltage, as well as the high reactivity of metallic Li. The key is the development of stable electrolytes against both high-voltage cathodes and Li with the formation of robust interphase films on the surfaces. Herein, we report a highly fluorinated ether, 1,1,1-trifluoro-2-[(2,2,2-trifluoroethoxy) methoxy] ethane (TTME), as a co-solvent, which not only functions as a diluent forming a localized high concentration electrolyte (LHCE), but also participates in the construction of the inner solvation structure. The TTME-based electrolyte is stable itself at high voltage and induces the formation of a unique double-layer solid electrolyte interphase (SEI) film, which is embodied as one layer rich in crystalline structural components for enhanced mechanical strength and another amorphous layer with a higher concentration of organic components for enhanced flexibility. The Li||Cu cells display a noticeably high Coulombic efficiency of 99.28% after 300 cycles and Li symmetric cells maintain stable cycling more than 3200 h at 0.5 mA/cm(2) and 1.0 mAh/cm(2). In addition, lithium metal cells using LiNi0.8Co0.1Mn0.1O2 and LiCoO2 cathodes (both loadings similar to 3.0 mAh/cm(2)) realize capacity retentions of >85% over 240 cycles with a charge cut-off voltage of 4.4 V and 90% for 170 cycles with a charge cut-off voltage of 4.5 V, respectively. This study offers a bifunctional ether-based electrolyte solvent beneficial for high-voltage Li metal batteries.
WOS关键词ANODE
资助项目Key-Area Research and Development Program of Guangdong Province[2020B090919001] ; National Natural Science Foundation of China[22078144] ; Guangdong Natural Science Foundation for Basic and Applied Basic Research[2021A1515010138] ; Guangdong Natural Science Foundation for Basic and Applied Basic Research[2023A1515010686]
WOS研究方向Chemistry ; Energy & Fuels ; Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:001114368900001
源URL[http://ir.qdio.ac.cn/handle/337002/184010]  
专题海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者Zhang, Guangzhao; Lynch, Iseult; Wang, Jun; Deng, Yonghong
作者单位1.CALB Grp Co Ltd, Changzhou 213200, Jiangsu, Peoples R China
2.Southern Univ Sci & Technol, Sch Innovat & Entrepreneurship, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, England
4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Shandong, Peoples R China
5.Shenzhen CAPCHEM Technol Co Ltd, Shenzhen 518118, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Ruo,Li, Jiawei,Han, Bing,et al. Unique double-layer solid electrolyte interphase formed with fluorinated ether-based electrolytes for high-voltage lithium metal batteries[J]. JOURNAL OF ENERGY CHEMISTRY,2024,88:532-542.
APA Wang, Ruo.,Li, Jiawei.,Han, Bing.,Wang, Qingrong.,Ke, Ruohong.,...&Deng, Yonghong.(2024).Unique double-layer solid electrolyte interphase formed with fluorinated ether-based electrolytes for high-voltage lithium metal batteries.JOURNAL OF ENERGY CHEMISTRY,88,532-542.
MLA Wang, Ruo,et al."Unique double-layer solid electrolyte interphase formed with fluorinated ether-based electrolytes for high-voltage lithium metal batteries".JOURNAL OF ENERGY CHEMISTRY 88(2024):532-542.

入库方式： OAI收割

来源：海洋研究所

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