Low concentration electrolyte with non-solvating cosolvent enabling high-voltage lithium metal batteries
Summary: Developing low cost, yet high-voltage electrolyte is significant to improve the energy density and practicability of lithium metal batteries (LMBs). Low concentration electrolyte has significant merits in terms of cost and viscosity; however, their poor compatibility with high-voltage LMBs...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-01-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004221014619 |
| _version_ | 1798016164084842496 |
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| author | Zhipeng Jiang Ziqi Zeng Han Zhang Li Yang Wei Hu Xinmiao Liang Jiwen Feng Chuang Yu Shijie Cheng Jia Xie |
| author_facet | Zhipeng Jiang Ziqi Zeng Han Zhang Li Yang Wei Hu Xinmiao Liang Jiwen Feng Chuang Yu Shijie Cheng Jia Xie |
| author_sort | Zhipeng Jiang |
| collection | DOAJ |
| description | Summary: Developing low cost, yet high-voltage electrolyte is significant to improve the energy density and practicability of lithium metal batteries (LMBs). Low concentration electrolyte has significant merits in terms of cost and viscosity; however, their poor compatibility with high-voltage LMBs hinders its applications. Here, we develop a diluted low concentration electrolyte by replacing solvating cosolvent with a non-solvating cosolvent to facilitate the interaction between BF4− and Li+, resulting in optimized interfacial chemistry and suppressed side reaction. Thus, the high-loading Li-LiCoO2 full cells (20.4 mg cm−2) deliver outstanding cycling stability and rate performance at a cutoff voltage of 4.6 V. More impressively, a Li-LiCoO2 pouch cell achieves an energy density of more than 400 Wh kg−1 under practical conditions with thin Li (50 μm) and lean electrolyte (2.7 g Ah−1). This work provides a rational approach to design a low concentration electrolyte, which can be extended to other high voltage battery systems. |
| first_indexed | 2024-04-11T15:46:23Z |
| format | Article |
| id | doaj.art-f9e2858ac215452dbc6ace40d3daea57 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-04-11T15:46:23Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-f9e2858ac215452dbc6ace40d3daea572022-12-22T04:15:31ZengElsevieriScience2589-00422022-01-01251103490Low concentration electrolyte with non-solvating cosolvent enabling high-voltage lithium metal batteriesZhipeng Jiang0Ziqi Zeng1Han Zhang2Li Yang3Wei Hu4Xinmiao Liang5Jiwen Feng6Chuang Yu7Shijie Cheng8Jia Xie9State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China; State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China; State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. ChinaState Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. ChinaState Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China; Corresponding authorSummary: Developing low cost, yet high-voltage electrolyte is significant to improve the energy density and practicability of lithium metal batteries (LMBs). Low concentration electrolyte has significant merits in terms of cost and viscosity; however, their poor compatibility with high-voltage LMBs hinders its applications. Here, we develop a diluted low concentration electrolyte by replacing solvating cosolvent with a non-solvating cosolvent to facilitate the interaction between BF4− and Li+, resulting in optimized interfacial chemistry and suppressed side reaction. Thus, the high-loading Li-LiCoO2 full cells (20.4 mg cm−2) deliver outstanding cycling stability and rate performance at a cutoff voltage of 4.6 V. More impressively, a Li-LiCoO2 pouch cell achieves an energy density of more than 400 Wh kg−1 under practical conditions with thin Li (50 μm) and lean electrolyte (2.7 g Ah−1). This work provides a rational approach to design a low concentration electrolyte, which can be extended to other high voltage battery systems.http://www.sciencedirect.com/science/article/pii/S2589004221014619ElectrochemistryEnergy storageMaterials science |
| spellingShingle | Zhipeng Jiang Ziqi Zeng Han Zhang Li Yang Wei Hu Xinmiao Liang Jiwen Feng Chuang Yu Shijie Cheng Jia Xie Low concentration electrolyte with non-solvating cosolvent enabling high-voltage lithium metal batteries iScience Electrochemistry Energy storage Materials science |
| title | Low concentration electrolyte with non-solvating cosolvent enabling high-voltage lithium metal batteries |
| title_full | Low concentration electrolyte with non-solvating cosolvent enabling high-voltage lithium metal batteries |
| title_fullStr | Low concentration electrolyte with non-solvating cosolvent enabling high-voltage lithium metal batteries |
| title_full_unstemmed | Low concentration electrolyte with non-solvating cosolvent enabling high-voltage lithium metal batteries |
| title_short | Low concentration electrolyte with non-solvating cosolvent enabling high-voltage lithium metal batteries |
| title_sort | low concentration electrolyte with non solvating cosolvent enabling high voltage lithium metal batteries |
| topic | Electrochemistry Energy storage Materials science |
| url | http://www.sciencedirect.com/science/article/pii/S2589004221014619 |
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