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| Regulated interfacial stability by coordinating ionic liquids with fluorinated solvent for high voltage and safety batteries | |
| Yan, Shuxin1; Wang, Yanlei2; Chen, Tianhua3; Gan, Zhongdong4; Chen, Shimou2,5,6; Liu, Yuwen1; Zhang, Suojiang2 | |
| 2021-04-15 | |
| Source Publication | JOURNAL OF POWER SOURCES
 |
| ISSN | 0378-7753 |
| Volume | 491Pages:10 |
| Abstract | Electrolyte is the key to improve the safety, cycle performance and temperature adaptation of lithium batteries. In this paper, we introduce a novel electrolyte that based on ionic liquids (ILs) 1-butyl-1-methylpyrrolidinium bis (trifluoromethylsulfonyl)imide (PYR14-TFSI) and fluorinated solvent 1,1,1,3,3,3-hexafluoroisopropyl methyl ether (HFPM). HFPM can significantly reduce the viscosity of PYR14-TFSI and enhance the wettability with Celgard separators. In addition, the coordination of PYR14-TFSI and HFPM promotes the local dissolution of lithium nitrate and helps to form a stable cathode/anode interface film. The electrochemical test shows that the electrochemical window of the electrolyte can reach to 5.35 V. For the Li/LiNi0.6Co0.2Mn0.2O2 half cells, the capacity retention is 94% and the Coulomb efficiency is 99.9% after 100 cycles at 0.5 C. The uniform and dense interface film is characterized and confirmed by scanning electron microscopy and X-ray photoelectron spectroscopy, etc. Furthermore, the half-cell also exhibits good thermal stability at high temperature. Considering ILs and fluoroether are non-flammable solvent, this work may pave the way for designing future generation highperformance electrolyte for lithium batteries. |
| Keyword | Lithium ion batteries Interface Ionic liquids Fluorinated solvent High-voltage electrolyte Non-flammable electrolyte |
| DOI | 10.1016/j.jpowsour.2021.229603 |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51922099] ; Chinese Academy of Sciences[CXYJJ20MS05] ; Natural Science Foundation of Hebei Province for Distinguished Young Scholars[E2020103052] ; Hebei Province Natural Science Foundation of China[E2019203469] ; Innovation Academy for Lightduty Gas Turbine |
| WOS Research Area | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
| WOS Subject | Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary |
| Funding Organization | National Natural Science Foundation of China ; Chinese Academy of Sciences ; Natural Science Foundation of Hebei Province for Distinguished Young Scholars ; Hebei Province Natural Science Foundation of China ; Innovation Academy for Lightduty Gas Turbine |
| WOS ID | WOS:000626628800001 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/47955 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Chen, Shimou; Liu, Yuwen |
| Affiliation | 1.Yanshan Univ, Coll Environm & Chem Engn, Hebei Key Lab Appl Chem, Qinhuangdao 066004, Hebei, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 3.Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia 4.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China 5.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China 6.Zhongke Langfang Inst Proc Engn, Langfang 065001, Hebei, Peoples R China |
| Recommended Citation GB/T 7714 | Yan, Shuxin,Wang, Yanlei,Chen, Tianhua,et al. Regulated interfacial stability by coordinating ionic liquids with fluorinated solvent for high voltage and safety batteries[J]. JOURNAL OF POWER SOURCES,2021,491:10. |
| APA | Yan, Shuxin.,Wang, Yanlei.,Chen, Tianhua.,Gan, Zhongdong.,Chen, Shimou.,...&Zhang, Suojiang.(2021).Regulated interfacial stability by coordinating ionic liquids with fluorinated solvent for high voltage and safety batteries.JOURNAL OF POWER SOURCES,491,10. |
| MLA | Yan, Shuxin,et al."Regulated interfacial stability by coordinating ionic liquids with fluorinated solvent for high voltage and safety batteries".JOURNAL OF POWER SOURCES 491(2021):10. |
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