Designing phosphazene-derivative electrolyte matrices to enable high-voltage lithium metal batteries for extreme working conditions

Yuefeng Meng; Dong Zhou; Ruliang Liu; Yao Tian; Yifu Gao; Yao Wang; Bing Sun; Feiyu Kang; Michel Armand; Baohua Li; Guoxiu Wang; Doron Aurbach

doi:10.1038/s41560-023-01339-z

Designing phosphazene-derivative electrolyte matrices to enable high-voltage lithium metal batteries for extreme working conditions

Yuefeng Meng, Dong Zhou, Ruliang Liu, Yao Tian, Yifu Gao, Yao Wang, Bing Sun, Feiyu Kang, Michel Armand, Baohua Li, Guoxiu Wang, Doron Aurbach

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

43 Scopus citations

Abstract

The current high-energy lithium metal batteries are limited by their safety and lifespan owing to the lack of suitable electrolyte solutions. Here we report a synergy of fluorinated co-solvent and gelation treatment by a butenoxycyclotriphosphazene (BCPN) monomer, which facilitates the use of ether-based electrolyte solutions for high-energy lithium metal batteries. We show that the safety risks of fire and electrolyte leakage are eliminated by the fluorinated co-solvent and fireproof polymeric matrices. The compatibility with high-energy cathodes is realized by a well-tailored Li⁺ solvation sheath, along with BCPN-derived protective surface films developed on the cathodes. Our Li | |LiNi_0.8Co_0.1Mn_0.1O₂ cells reach high-capacity retention, superior low-temperature performance, good cyclability under high pressure and steady power supply under abusive conditions. Our electrolyte design concept provides a promising path for high energetic, durable and safe rechargeable Li batteries.

Original language	English
Pages (from-to)	1023-1033
Number of pages	11
Journal	Nature Energy
Volume	8
Issue number	9
DOIs	https://doi.org/10.1038/s41560-023-01339-z
State	Published - Sep 2023

Bibliographical note

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer Nature Limited.

Funding

B.L. acknowledges support by the National Natural Science Foundation of China (number 52072208 and number 52261160384), Shenzhen Science and Technology Program (KCXFZ20211020163810015), the Fundamental Research Project of Shenzhen (number JCYJ20220818101004009), Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01N111) and Shenzhen Outstanding Talents Training Fund. G.W. acknowledges the support from Australian Research Council (ARC) Discovery Projects (DP200101249 and DP210101389) and the ARC Research Hub for Integrated Energy Storage Solutions (IH180100020). B.S. acknowledges the financial support from the Australian Research Council (ARC) through the ARC Future Fellowship (FT220100561).

Funders	Funder number
Shenzhen Outstanding Talents Training Fund
Guangdong Provincial Pearl River Talents Program	2017BT01N111
Australian Research Council	DP200101249, DP210101389, IH180100020, FT220100561
National Natural Science Foundation of China	52072208, 52261160384
Science, Technology and Innovation Commission of Shenzhen Municipality	KCXFZ20211020163810015
Shenzhen Fundamental Research Program	JCYJ20220818101004009

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

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abstract = "The current high-energy lithium metal batteries are limited by their safety and lifespan owing to the lack of suitable electrolyte solutions. Here we report a synergy of fluorinated co-solvent and gelation treatment by a butenoxycyclotriphosphazene (BCPN) monomer, which facilitates the use of ether-based electrolyte solutions for high-energy lithium metal batteries. We show that the safety risks of fire and electrolyte leakage are eliminated by the fluorinated co-solvent and fireproof polymeric matrices. The compatibility with high-energy cathodes is realized by a well-tailored Li+ solvation sheath, along with BCPN-derived protective surface films developed on the cathodes. Our Li | |LiNi0.8Co0.1Mn0.1O2 cells reach high-capacity retention, superior low-temperature performance, good cyclability under high pressure and steady power supply under abusive conditions. Our electrolyte design concept provides a promising path for high energetic, durable and safe rechargeable Li batteries.",

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AU - Wang, Yao

AU - Sun, Bing

AU - Kang, Feiyu

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AU - Wang, Guoxiu

AU - Aurbach, Doron

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Designing phosphazene-derivative electrolyte matrices to enable high-voltage lithium metal batteries for extreme working conditions

Abstract

Bibliographical note

Funding

UN SDGs

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