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Solvating power regulation enabled low concentration electrolyte for lithium batteries

文献类型：期刊论文

作者Peng, Linshan5,6; Wua, Xiangkun4,6; Jia, Mengmin5,6; Qian, Weiwei6; Zhang, Xiaoyan3; Zhou, Na6; Zhang, Lan4,6; Jian, Cuiying2; Zhang, Suojiang1,5,6
刊名SCIENCE BULLETIN
出版日期2022-11-15
卷号67期号:21页码:2235-2244
关键词Lithium metal batteries Solvating power Low concentration electrolytes Desolvation energy FEC
ISSN号2095-9273
DOI10.1016/j.scib.2022.10.008
英文摘要Li+ solvation structures have a decisive influence on the electrode/electrolyte interfacial properties and battery performances. Reduced salt concentration may result in an organic rich solid electrolyte interface (SEI) and catastrophic cycle stability, which makes low concentration electrolytes (LCEs) rather challenging. Solvents with low solvating power bring in new chances to LCEs due to the weak salt-solvent interactions. Herein, an LCE with only 0.25 mol L-1 salt is prepared with fluoroethylene carbonate (FEC) and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropylether (D-2). Molecular dynamics simulations and experiments prove that the low solvating power solvent FEC not only renders reduced desolvation energy to Li+ and improves the battery kinetics, but also promotes the formation of a LiF-rich SEI that hinders the electrolyte consumption. Li||Cu cell using the LCE shows a high coulombic efficiency of 99.20%, and LiNi0.6Co0.2Mn0.2O2||Li cell also exhibits satisfying capacity retention of 89.93% in 200 cycles, which demonstrates the great potential of solvating power regulation in LCEs development. (c) 2022 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
WOS关键词LI-ION ; METAL ANODES ; FORCE-FIELD ; CARBONATE ; DYNAMICS ; PERFORMANCE ; SOLVENTS ; CATHODE ; LIQUID ; SHEATH
资助项目National Key Research and Development Program of China[2019YFA0705603] ; National Natural Science Foundation of China[22078341] ; Natural Science Foundation of Hebei Province[B2020103028] ; York University
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000910170100015
出版者ELSEVIER
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Natural Science Foundation of Hebei Province ; York University
源URL[http://ir.ipe.ac.cn/handle/122111/56597]  
专题中国科学院过程工程研究所
通讯作者Zhang, Lan; Jian, Cuiying; Zhang, Suojiang
作者单位1.Zhengzhou Inst Emerging Ind Technol, Henan Key Lab Energy Storage Mat & Proc, Zhengzhou 450003, Peoples R China
2.York Univ, Lassonde Sch Engn, Dept Mech Engn, Toronto, ON M3J 1P3, Canada
3.Xi An Jiao Tong Univ, Shaanxi Key Lab Energy Chem Proc Intensificat, Sch Chem Engn & Technol, Xian 710049, Peoples R China
4.Langfang Green Ind Technol Ctr, Langfang 065001, Peoples R China
5.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
6.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ionic Liquids Clean Proc, Inst Proc Engn,CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Linshan,Wua, Xiangkun,Jia, Mengmin,et al. Solvating power regulation enabled low concentration electrolyte for lithium batteries[J]. SCIENCE BULLETIN,2022,67(21):2235-2244.
APA Peng, Linshan.,Wua, Xiangkun.,Jia, Mengmin.,Qian, Weiwei.,Zhang, Xiaoyan.,...&Zhang, Suojiang.(2022).Solvating power regulation enabled low concentration electrolyte for lithium batteries.SCIENCE BULLETIN,67(21),2235-2244.
MLA Peng, Linshan,et al."Solvating power regulation enabled low concentration electrolyte for lithium batteries".SCIENCE BULLETIN 67.21(2022):2235-2244.

入库方式： OAI收割

来源：过程工程研究所

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