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| Formation of robust CEI film on high voltage LiNi0.6Co0.2Mn0.2O2 cathode enabled by functional [PIVM][TFSA] ionic liquid additive | |
| Cai, Yingjun1,2; Xu, Tinghua2; Meng, Xianglei2; von Solms, Nicolas1; Zhang, Haitao2; Thomsen, Kaj1 | |
| 2022-08-20 | |
| Source Publication | ELECTROCHIMICA ACTA
 |
| ISSN | 0013-4686 |
| Volume | 424Pages:8 |
| Abstract | The ionic liquid 1-(3-amino-3-oxopropyl)-3-vinylimidazolium bis(trifluoromethylsulfonyl)amide ([PIVM] [TFSA]) was synthesized and applied in the electrolyte of Li/LiNi0.6Co0.2Mn0.2O2 lithium ion batteries. The thermostability of this pure ionic liquid was investigated to provide a wide liquid range from -50 degrees C to 200 degrees C. The physicochemical properties of binary mixtures of this ionic liquid with DMC and EMC were measured at different temperatures and with different ionic liquid mole fractions. [PIVM][TFSA] widens the electrochemical window of the electrolyte. The ionic liquid inhibits the increasing of water and HF content in the electrolyte. A comparison of charge and discharge performances in different electrolytes with various content of ionic liquid is reported. The electrolyte with the concentration of 1.0 wt % [PIVM][TFSA] has the best electrochemical properties. It enhances the initial capacity, the capacity retention and the high current rate performance of the cells. The surface film on the electrodes was confirmed by SEM and XPS that the ionic liquid [PIVM][TFSA] participated in membrane formation and played an active role. |
| Keyword | Lithium ion batteries Electrolyte Ionic liquid High-voltage Additive |
| DOI | 10.1016/j.electacta.2022.140679 |
| Language | 英语 |
| WOS Keyword | ELECTROCHEMICAL PERFORMANCE ; GAMMA-BUTYROLACTONE ; LITHIUM ; ELECTROLYTE ; BATTERIES |
| Funding Project | National Key Research and Development Program of China[2019YFA0705602] ; Science and Technology Service Network Initiative program of CAS ; China Scholarship Council ; Department of Chemical Engi-neering, Technical University of Denmark |
| WOS Research Area | Electrochemistry |
| WOS Subject | Electrochemistry |
| Funding Organization | National Key Research and Development Program of China ; Science and Technology Service Network Initiative program of CAS ; China Scholarship Council ; Department of Chemical Engi-neering, Technical University of Denmark |
| WOS ID | WOS:000819244700003 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/54139 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Zhang, Haitao; Thomsen, Kaj |
| Affiliation | 1.Tech Univ Denmark, Ctr Energy Resources Engn CERE, Dept Chem & Biochem Engn, Lyngby 2800, Denmark 2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn,State Key Lab Multip, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Cai, Yingjun,Xu, Tinghua,Meng, Xianglei,et al. Formation of robust CEI film on high voltage LiNi0.6Co0.2Mn0.2O2 cathode enabled by functional [PIVM][TFSA] ionic liquid additive[J]. ELECTROCHIMICA ACTA,2022,424:8. |
| APA | Cai, Yingjun,Xu, Tinghua,Meng, Xianglei,von Solms, Nicolas,Zhang, Haitao,&Thomsen, Kaj.(2022).Formation of robust CEI film on high voltage LiNi0.6Co0.2Mn0.2O2 cathode enabled by functional [PIVM][TFSA] ionic liquid additive.ELECTROCHIMICA ACTA,424,8. |
| MLA | Cai, Yingjun,et al."Formation of robust CEI film on high voltage LiNi0.6Co0.2Mn0.2O2 cathode enabled by functional [PIVM][TFSA] ionic liquid additive".ELECTROCHIMICA ACTA 424(2022):8. |
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