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Title: Interfacial engineering for stabilizing polymer electrolytes with 4V cathodes in lithium metal batteries at elevated temperature

Abstract

Poly (ethylene oxide) (PEO) polymer electrolytes are promising candidates for next-generation rechargeable lithium batteries. However, the poor interfacial stability between 4 V cathodes and PEO electrolytes impedes their applications in 4 V lithium batteries with high energy density. Here, we demonstrate a facile and effective strategy to enhance the interfacial stability by the synergy of Li1.5Al0.5Ge1.5(PO4)3 (LAGP) coating on the cathode surface, and salt combination in the electrolyte, even with a cut-off voltage of 4.25–4.4 V vs. Li+/Li. Nano-LAGP coated Li|PEO|LiCoO2 cell delivers stable cycling with a capacity retention of 81.9%/400 cycles and 84.7%/200 cycles at 60 °C when charged to 4.25 and 4.3 V in pure polyether electrolyte, respectively. Steady cycling is also demonstrated at room temperature and with LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode. This work offers a viable and scalable approach to improve the stability between PEO electrolytes and 4 V cathodes and open up new possibilities for practical application of 4 V lithium metal batteries.

Authors:
 [1];  [2];  [1];  [3]; ORCiD logo [1]; ORCiD logo [1];  [4]; ORCiD logo [4];  [4]; ORCiD logo [5];  [1];  [4]; ORCiD logo [4];  [1];  [1];  [1];  [3];  [6];  [1]
  1. Columbia Univ., New York, NY (United States). Dept. of Applied Physics and Applied Mathematics
  2. Columbia Univ., New York, NY (United States). Dept. of Applied Physics and Applied Mathematics; Peking Univ., Beijing (China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  5. Univ. of Science and Technology Beijing (China)
  6. Peking Univ., Beijing (China)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1617293
Alternate Identifier(s):
OSTI ID: 1605289
Report Number(s):
BNL-215878-2020-JAAM
Journal ID: ISSN 2211-2855
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Nano Energy
Additional Journal Information:
Journal Volume: 72; Journal Issue: C; Journal ID: ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Lithium metal batteries; Surface passivation; Poly (ethylene oxide); High-voltage cathode; Energy density

Citation Formats

Li, Zeyuan, Li, Aijun, Zhang, Hanrui, Lin, Ruoqian, Jin, Tianwei, Cheng, Qian, Xiao, Xianghui, Lee, Wah-Keat, Ge, Mingyuan, Zhang, Haijun, Zangiabadi, Amirali, Waluyo, Iradwikanari, Hunt, Adrian, Zhai, Haowei, Borovilas, James Joseph, Wang, Peiyu, Yang, Xiao-Qing, Chuan, Xiuyun, and Yang, Yuan. Interfacial engineering for stabilizing polymer electrolytes with 4V cathodes in lithium metal batteries at elevated temperature. United States: N. p., 2020. Web. doi:10.1016/j.nanoen.2020.104655.
Li, Zeyuan, Li, Aijun, Zhang, Hanrui, Lin, Ruoqian, Jin, Tianwei, Cheng, Qian, Xiao, Xianghui, Lee, Wah-Keat, Ge, Mingyuan, Zhang, Haijun, Zangiabadi, Amirali, Waluyo, Iradwikanari, Hunt, Adrian, Zhai, Haowei, Borovilas, James Joseph, Wang, Peiyu, Yang, Xiao-Qing, Chuan, Xiuyun, & Yang, Yuan. Interfacial engineering for stabilizing polymer electrolytes with 4V cathodes in lithium metal batteries at elevated temperature. United States. https://doi.org/10.1016/j.nanoen.2020.104655
Li, Zeyuan, Li, Aijun, Zhang, Hanrui, Lin, Ruoqian, Jin, Tianwei, Cheng, Qian, Xiao, Xianghui, Lee, Wah-Keat, Ge, Mingyuan, Zhang, Haijun, Zangiabadi, Amirali, Waluyo, Iradwikanari, Hunt, Adrian, Zhai, Haowei, Borovilas, James Joseph, Wang, Peiyu, Yang, Xiao-Qing, Chuan, Xiuyun, and Yang, Yuan. Thu . "Interfacial engineering for stabilizing polymer electrolytes with 4V cathodes in lithium metal batteries at elevated temperature". United States. https://doi.org/10.1016/j.nanoen.2020.104655. https://www.osti.gov/servlets/purl/1617293.
@article{osti_1617293,
title = {Interfacial engineering for stabilizing polymer electrolytes with 4V cathodes in lithium metal batteries at elevated temperature},
author = {Li, Zeyuan and Li, Aijun and Zhang, Hanrui and Lin, Ruoqian and Jin, Tianwei and Cheng, Qian and Xiao, Xianghui and Lee, Wah-Keat and Ge, Mingyuan and Zhang, Haijun and Zangiabadi, Amirali and Waluyo, Iradwikanari and Hunt, Adrian and Zhai, Haowei and Borovilas, James Joseph and Wang, Peiyu and Yang, Xiao-Qing and Chuan, Xiuyun and Yang, Yuan},
abstractNote = {Poly (ethylene oxide) (PEO) polymer electrolytes are promising candidates for next-generation rechargeable lithium batteries. However, the poor interfacial stability between 4 V cathodes and PEO electrolytes impedes their applications in 4 V lithium batteries with high energy density. Here, we demonstrate a facile and effective strategy to enhance the interfacial stability by the synergy of Li1.5Al0.5Ge1.5(PO4)3 (LAGP) coating on the cathode surface, and salt combination in the electrolyte, even with a cut-off voltage of 4.25–4.4 V vs. Li+/Li. Nano-LAGP coated Li|PEO|LiCoO2 cell delivers stable cycling with a capacity retention of 81.9%/400 cycles and 84.7%/200 cycles at 60 °C when charged to 4.25 and 4.3 V in pure polyether electrolyte, respectively. Steady cycling is also demonstrated at room temperature and with LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode. This work offers a viable and scalable approach to improve the stability between PEO electrolytes and 4 V cathodes and open up new possibilities for practical application of 4 V lithium metal batteries.},
doi = {10.1016/j.nanoen.2020.104655},
journal = {Nano Energy},
number = C,
volume = 72,
place = {United States},
year = {Thu Mar 05 00:00:00 EST 2020},
month = {Thu Mar 05 00:00:00 EST 2020}
}

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