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Wang D, Jin B, Huang J, Yao X, Ren Y, Xu X, Han X, Li F, Zhan X, Zhang Q. Laponite-Supported Gel Polymer Electrolyte with Multiple Lithium-Ion Transport Channels for Stable Lithium Metal Batteries. ACS Appl Mater Interfaces 2023. [PMID: 37365916 DOI: 10.1021/acsami.3c04309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Lithium metal batteries have emerged as a promising candidate for next-generation power systems. However, the high reactivity of lithium metal with liquid electrolytes has resulted in decreased battery safety and stability, which poses a significant challenge. Herein, we present a modified laponite-supported gel polymer electrolyte (LAP@PDOL GPE) that was fabricated using in situ polymerization initiated by a redox-initiating system at ambient temperature. The LAP@PDOL GPE effectively facilitates the dissociation of lithium salts via electrostatic interaction and simultaneously constructs multiple lithium-ion transport channels within the gel polymer network. This hierarchical GPE demonstrates a remarkable ionic conductivity of 5.16 × 10-4 S cm-1 at 30 °C. Furthermore, the robust laponite component of the LAP@PDOL GPE forms a barrier against Li dendrite growth while also participating in the establishment of a stable electrode/electrolyte interface with Si-rich components. The in situ polymerization process further improves the interfacial contact, enabling the LiFePO4/LAP@PDOL GPE/Li cell to exhibit an impressive capacity of 137 mAh g-1 at 1C, with a capacity retention of 98.5% even after 400 cycles. In summary, the developed LAP@PDOL GPE shows great potential in addressing the critical issues of safety and stability associated with lithium metal batteries while also delivering improved electrochemical performance.
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Affiliation(s)
- Dongyun Wang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310030, China
| | - Biyu Jin
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jiao Huang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310030, China
| | - Xinyu Yao
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310030, China
| | - Yongyuan Ren
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
| | - Xiao Xu
- Wanxiang A123 Systems Asia Com., Ltd., Hangzhou 311215, China
| | - Xiao Han
- Wanxiang A123 Systems Asia Com., Ltd., Hangzhou 311215, China
| | - Fanqun Li
- Wanxiang A123 Systems Asia Com., Ltd., Hangzhou 311215, China
| | - Xiaoli Zhan
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310030, China
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
| | - Qinghua Zhang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310030, China
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
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Liu Q, Xu S, Li X, Chen R, Wang X, Gao Y, Wang Z, Chen L. Polymer Competitive Solvation Reduced Propylene Carbonate Cointercalation in a Graphitic Anode. Nano Lett 2023; 23:2623-2629. [PMID: 36926919 DOI: 10.1021/acs.nanolett.2c04898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Polymer electrolytes have been studied as an alternative to organic liquid electrolytes but suffer from low ionic conductivity. Propylene carbonate (PC) proves to be an interesting solvent but is incompatible with graphitic anodes due to its cointercalation effect. In this work, adding poly(ethylene oxide) (PEO) into a PC-based electrolyte can alter the solvation structure as well as transform the solution into a polymer electrolyte with high ionic conductivity. By spectroscopic techniques and calculations, we demonstrate that PEO can compete with PC in solvating the Li+ ions, reducing the Li+-PC bond strength, and making it easier for PC to be desolvated. Due to the unique solvation structure, PC-cointercalation-induced graphite exfoliation is inhibited, and the reduction stability of the electrolyte is improved. This work will extend the applications of the PC-based electrolytes, deepen the understandings of the solvation structure, and spur designs of advanced electrolytes.
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Affiliation(s)
- Qiuyan Liu
- Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Shiwei Xu
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
- Laboratory for Advanced Materials and Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaoyun Li
- Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Renjie Chen
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Xuefeng Wang
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
- Laboratory for Advanced Materials and Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Yurui Gao
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100190, China
- Laboratory of Theoretical and Computational Nanoscience, CAS Key Laboratory for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhaoxiang Wang
- Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Liquan Chen
- Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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