A gel polymer electrolyte based on IL@NH2-MIL-53 (Al) for high-performance all-solid-state lithium metal batteries

doi:10.1016/j.cjche.2024.01.017

中国化学工程学报 ›› 2024, Vol. 69 ›› Issue (5): 47-55.DOI: 10.1016/j.cjche.2024.01.017

A gel polymer electrolyte based on IL@NH₂-MIL-53 (Al) for high-performance all-solid-state lithium metal batteries

Sijia Wang¹, Ye Liu¹, Liang He¹, Yu Sun¹, Qing Huang², Shoudong Xu³, Xiangyun Qiu⁴, Tao Wei¹

1. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
2. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China;
3. College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, China;
4. Power & Energy Storage System Research Center, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China

收稿日期:2023-08-20 修回日期:2023-11-15 出版日期:2024-05-28 发布日期:2024-07-01
通讯作者: Tao Wei,E-mail:wt863@126.com
基金资助:
This work was financially supported by National Natural Science Foundation of China (21701083) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX20_3137).

A gel polymer electrolyte based on IL@NH₂-MIL-53 (Al) for high-performance all-solid-state lithium metal batteries

Sijia Wang¹, Ye Liu¹, Liang He¹, Yu Sun¹, Qing Huang², Shoudong Xu³, Xiangyun Qiu⁴, Tao Wei¹

1. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
2. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China;
3. College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, China;
4. Power & Energy Storage System Research Center, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China

Received:2023-08-20 Revised:2023-11-15 Online:2024-05-28 Published:2024-07-01
Contact: Tao Wei,E-mail:wt863@126.com
Supported by:
This work was financially supported by National Natural Science Foundation of China (21701083) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX20_3137).

摘要/Abstract

摘要： Solid polymer composite electrolytes possess the benefits of superior compatibility with electrodes and good thermal characteristics for more secure energy storage equipment. Herein, a new gel polymer electrolyte (GPE) containing NH₂-MIL-53(Al), [PP₁₃][TFSI], LiTFSI, and PVDF-HFP was prepared using a simple method of solution casting. The effects of encapsulating different ratios of ionic liquid ([PP₁₃][TFSI]) into the micropores of functionalized metal-organic frameworks (NH₂-MIL-53(Al)) on the electrochemical properties were compared. XRD, SEM, nitrogen adsorption-desorption isotherms, and electrochemical measurements were conducted. This GPE demonstrates a superior ionic conductivity of 8.08×10^-4 S·cm^-1 at 60 ℃ and can sustain a discharge specific capacity of 156.6 mA·h·g^-1 at 0.2 C for over 100 cycles. This work might offer a potential approach to alleviate the solid-solid contact with the solid-state electrolyte and electrodes and broaden a new window for the creation of all-solid-state batteries.

关键词: Metal-organic frameworks (MOFs), All solid-state lithium batteries (ASSLBs), Ionic liquid, NH₂-MIL-53(Al), Solid-state electrolytes (SSEs)

Abstract: Solid polymer composite electrolytes possess the benefits of superior compatibility with electrodes and good thermal characteristics for more secure energy storage equipment. Herein, a new gel polymer electrolyte (GPE) containing NH₂-MIL-53(Al), [PP₁₃][TFSI], LiTFSI, and PVDF-HFP was prepared using a simple method of solution casting. The effects of encapsulating different ratios of ionic liquid ([PP₁₃][TFSI]) into the micropores of functionalized metal-organic frameworks (NH₂-MIL-53(Al)) on the electrochemical properties were compared. XRD, SEM, nitrogen adsorption-desorption isotherms, and electrochemical measurements were conducted. This GPE demonstrates a superior ionic conductivity of 8.08×10^-4 S·cm^-1 at 60 ℃ and can sustain a discharge specific capacity of 156.6 mA·h·g^-1 at 0.2 C for over 100 cycles. This work might offer a potential approach to alleviate the solid-solid contact with the solid-state electrolyte and electrodes and broaden a new window for the creation of all-solid-state batteries.

Key words: Metal-organic frameworks (MOFs), All solid-state lithium batteries (ASSLBs), Ionic liquid, NH₂-MIL-53(Al), Solid-state electrolytes (SSEs)

Sijia Wang, Ye Liu, Liang He, Yu Sun, Qing Huang, Shoudong Xu, Xiangyun Qiu, Tao Wei. A gel polymer electrolyte based on IL@NH₂-MIL-53 (Al) for high-performance all-solid-state lithium metal batteries[J]. 中国化学工程学报, 2024, 69(5): 47-55.

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A gel polymer electrolyte based on IL@NH₂-MIL-53 (Al) for high-performance all-solid-state lithium metal batteries

A gel polymer electrolyte based on IL@NH₂-MIL-53 (Al) for high-performance all-solid-state lithium metal batteries

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