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

Zeyuan Li; Aijun Li; Hanrui Zhang; Ruoqian Lin; Tianwei Jin; Qian Cheng; Xianghui Xiao; Wah Keat Lee; Mingyuan Ge; Haijun Zhang; Amirali Zangiabadi; Iradwikanari Waluyo; Adrian Hunt; Haowei Zhai; James Joseph Borovilas; Peiyu Wang; Xiao Qing Yang; Xiuyun Chuan; Yuan Yang

doi:10.1016/j.nanoen.2020.104655

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

Zeyuan Li, Aijun Li, Hanrui Zhang, Ruoqian Lin, Tianwei Jin, Qian Cheng, Xianghui Xiao, Wah Keat Lee, Mingyuan Ge, Haijun Zhang, Amirali Zangiabadi, Iradwikanari Waluyo, Adrian Hunt, Haowei Zhai, James Joseph Borovilas, Peiyu Wang, Xiao Qing Yang, Xiuyun Chuan, Yuan Yang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

86 Citations (Scopus)

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 Li_1.5Al_0.5Ge_1.5(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 LiNi_0.5Co_0.2Mn_0.3O₂ (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.

Original language	English
Article number	104655
Journal	Nano Energy
Volume	72
DOIs	https://doi.org/10.1016/j.nanoen.2020.104655
Publication status	Published - Jun 2020
Externally published	Yes

Keywords

Energy density
High-voltage cathode
Lithium metal batteries
Poly (ethylene oxide)
Surface passivation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.nanoen.2020.104655

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Li, Z., Li, A., Zhang, H., Lin, R., Jin, T., Cheng, Q., Xiao, X., Lee, W. K., Ge, M., Zhang, H., Zangiabadi, A., Waluyo, I., Hunt, A., Zhai, H., Borovilas, J. J., Wang, P., Yang, X. Q., Chuan, X., & Yang, Y. (2020). Interfacial engineering for stabilizing polymer electrolytes with 4V cathodes in lithium metal batteries at elevated temperature. Nano Energy, 72, Article 104655. https://doi.org/10.1016/j.nanoen.2020.104655

@article{c9dbf8c9dc804f55833c262b0f7cc4a5,

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.",

keywords = "Energy density, High-voltage cathode, Lithium metal batteries, Poly (ethylene oxide), Surface passivation",

author = "Zeyuan Li and Aijun Li and Hanrui Zhang and Ruoqian Lin and Tianwei Jin and Qian Cheng and Xianghui Xiao and Lee, {Wah Keat} and Mingyuan Ge and Haijun Zhang and Amirali Zangiabadi and Iradwikanari Waluyo and Adrian Hunt and Haowei Zhai and Borovilas, {James Joseph} and Peiyu Wang and Yang, {Xiao Qing} and Xiuyun Chuan and Yuan Yang",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = jun,

doi = "10.1016/j.nanoen.2020.104655",

language = "English",

volume = "72",

journal = "Nano Energy",

issn = "2211-2855",

publisher = "Elsevier B.V.",

}

Li, Z, Li, A, Zhang, H, Lin, R, Jin, T, Cheng, Q, Xiao, X, Lee, WK, Ge, M, Zhang, H, Zangiabadi, A, Waluyo, I, Hunt, A, Zhai, H, Borovilas, JJ, Wang, P, Yang, XQ, Chuan, X & Yang, Y 2020, 'Interfacial engineering for stabilizing polymer electrolytes with 4V cathodes in lithium metal batteries at elevated temperature', Nano Energy, vol. 72, 104655. https://doi.org/10.1016/j.nanoen.2020.104655

TY - JOUR

T1 - Interfacial engineering for stabilizing polymer electrolytes with 4V cathodes in lithium metal batteries at elevated temperature

AU - Li, Zeyuan

AU - Li, Aijun

AU - Zhang, Hanrui

AU - Lin, Ruoqian

AU - Jin, Tianwei

AU - Cheng, Qian

AU - Xiao, Xianghui

AU - Lee, Wah Keat

AU - Ge, Mingyuan

AU - Zhang, Haijun

AU - Zangiabadi, Amirali

AU - Waluyo, Iradwikanari

AU - Hunt, Adrian

AU - Zhai, Haowei

AU - Borovilas, James Joseph

AU - Wang, Peiyu

AU - Yang, Xiao Qing

AU - Chuan, Xiuyun

AU - Yang, Yuan

PY - 2020/6

Y1 - 2020/6

N2 - 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.

AB - 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.

KW - Energy density

KW - High-voltage cathode

KW - Lithium metal batteries

KW - Poly (ethylene oxide)

KW - Surface passivation

UR - http://www.scopus.com/inward/record.url?scp=85081681596&partnerID=8YFLogxK

U2 - 10.1016/j.nanoen.2020.104655

DO - 10.1016/j.nanoen.2020.104655

M3 - Article

AN - SCOPUS:85081681596

SN - 2211-2855

VL - 72

JO - Nano Energy

JF - Nano Energy

M1 - 104655

ER -

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

Abstract

Keywords

UN SDGs

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