High-voltage and intrinsically safe electrolytes for Li metal batteries
Abstract Current electrolytes of mixing different functional solvents inherit both merits and weaknesses of each solvent, thus cannot simultaneously meet all the requirements of high energy, long cycle life, and high safety for Li metal batteries (LMBs). Here, we design a high voltage and safe elect...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-11-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-51958-7 |
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| author | Zhixin Xu Xiyue Zhang Jun Yang Xuzixu Cui Yanna Nuli Jiulin Wang |
| author_facet | Zhixin Xu Xiyue Zhang Jun Yang Xuzixu Cui Yanna Nuli Jiulin Wang |
| author_sort | Zhixin Xu |
| collection | DOAJ |
| description | Abstract Current electrolytes of mixing different functional solvents inherit both merits and weaknesses of each solvent, thus cannot simultaneously meet all the requirements of high energy, long cycle life, and high safety for Li metal batteries (LMBs). Here, we design a high voltage and safe electrolyte (VSE) by integrating different functional groups into one molecule. The VSE electrolyte has a wide electrochemical stability window of ~5.6 V enabling a Li anode to achieve high Coulombic efficiency of >99.3%, Li | |LiNi0.8Co0.1Mn0.1O2 coin cell to maintain capacity retention of 92% after 500 cycles, and the 3.5-Ah-grade Li | |LiNi0.8Co0.1Mn0.1O2 pouch cell to deliver a high energy density of 531 Wh kg−1 without any flame and expansion after cycled under extreme conditions. The VSE electrolyte even enables 5.0 V Li | |LiNi0.5Mn1.5O4 cells to charge/discharge for 200 cycles without capacity decay. This work provides a promising direction for the rational design of high-voltage and intrinsically safe electrolytes for LMBs. |
| format | Article |
| id | doaj-art-c1ebab4748874a7f81c7fa51927671eb |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-c1ebab4748874a7f81c7fa51927671eb2024-11-17T12:36:49ZengNature PortfolioNature Communications2041-17232024-11-0115111110.1038/s41467-024-51958-7High-voltage and intrinsically safe electrolytes for Li metal batteriesZhixin Xu0Xiyue Zhang1Jun Yang2Xuzixu Cui3Yanna Nuli4Jiulin Wang5Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong UniversityDepartment of Chemical and Biomolecular Engineering, University of MarylandShanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong UniversityShanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong UniversityShanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong UniversityShanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong UniversityAbstract Current electrolytes of mixing different functional solvents inherit both merits and weaknesses of each solvent, thus cannot simultaneously meet all the requirements of high energy, long cycle life, and high safety for Li metal batteries (LMBs). Here, we design a high voltage and safe electrolyte (VSE) by integrating different functional groups into one molecule. The VSE electrolyte has a wide electrochemical stability window of ~5.6 V enabling a Li anode to achieve high Coulombic efficiency of >99.3%, Li | |LiNi0.8Co0.1Mn0.1O2 coin cell to maintain capacity retention of 92% after 500 cycles, and the 3.5-Ah-grade Li | |LiNi0.8Co0.1Mn0.1O2 pouch cell to deliver a high energy density of 531 Wh kg−1 without any flame and expansion after cycled under extreme conditions. The VSE electrolyte even enables 5.0 V Li | |LiNi0.5Mn1.5O4 cells to charge/discharge for 200 cycles without capacity decay. This work provides a promising direction for the rational design of high-voltage and intrinsically safe electrolytes for LMBs.https://doi.org/10.1038/s41467-024-51958-7 |
| spellingShingle | Zhixin Xu Xiyue Zhang Jun Yang Xuzixu Cui Yanna Nuli Jiulin Wang High-voltage and intrinsically safe electrolytes for Li metal batteries Nature Communications |
| title | High-voltage and intrinsically safe electrolytes for Li metal batteries |
| title_full | High-voltage and intrinsically safe electrolytes for Li metal batteries |
| title_fullStr | High-voltage and intrinsically safe electrolytes for Li metal batteries |
| title_full_unstemmed | High-voltage and intrinsically safe electrolytes for Li metal batteries |
| title_short | High-voltage and intrinsically safe electrolytes for Li metal batteries |
| title_sort | high voltage and intrinsically safe electrolytes for li metal batteries |
| url | https://doi.org/10.1038/s41467-024-51958-7 |
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