Deep-Eutectic-Solvent-Based Self-Healing Polymer Electrolyte for Safe and Long-Life Lithium-Metal Batteries

Pauline Jaumaux; Qi Liu; Dong Zhou; Xiaofu Xu; Tianyi Wang; Yizhou Wang; Feiyu Kang; Baohua Li; Guoxiu Wang

doi:10.1002/anie.202001793

Deep-Eutectic-Solvent-Based Self-Healing Polymer Electrolyte for Safe and Long-Life Lithium-Metal Batteries

Pauline Jaumaux, Qi Liu, Dong Zhou^*, Xiaofu Xu, Tianyi Wang, Yizhou Wang, Feiyu Kang, Baohua Li, Guoxiu Wang

^*Corresponding author for this work

Material Science and Engineering

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

338 Scopus citations

Abstract

The deployment of high-energy-density lithium-metal batteries has been greatly impeded by Li dendrite growth and safety concerns originating from flammable liquid electrolytes. Herein, we report a stable quasi-solid-state Li metal battery with a deep eutectic solvent (DES)-based self-healing polymer (DSP) electrolyte. This electrolyte was fabricated in a facile manner by in situ copolymerization of 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate (UPyMA) and pentaerythritol tetraacrylate (PETEA) monomers in a DES-based electrolyte containing fluoroethylene carbonate (FEC) as an additive. The well-designed DSP electrolyte simultaneously possesses non-flammability, high ionic conductivity and electrochemical stability, and dendrite-free Li plating. When applied in Li metal batteries with a LiMn₂O₄ cathode, the DSP electrolyte effectively suppressed manganese dissolution from the cathode and enabled high-capacity and a long lifespan at room and elevated temperatures.

Original language	English (US)
Pages (from-to)	9134-9142
Number of pages	9
Journal	Angewandte Chemie - International Edition
Volume	59
Issue number	23
DOIs	https://doi.org/10.1002/anie.202001793
State	Published - Jun 2 2020

Bibliographical note

Funding Information:
This research was supported by Australian Rail Manufactory CRC projects (RMCRC: R1.1.1 and R1.1.2) and the Australian Research Council (ARC) Discovery Project (DP170100436; DP200101249). We also acknowledge support by the National Nature Science Foundation of China (No. 51872157), Shenzhen Key Laboratory (ZD SYS201707271615073), and the Shenzhen Technical Plan Project (Nos. JCYJ20170412170911187 and JCYJ20170817161753629). We are grateful for assistance with the viscosity measurements by Dr. Barry Liu at the University of Technology Sydney.

Funding Information:
This research was supported by Australian Rail Manufactory CRC projects (RMCRC: R1.1.1 and R1.1.2) and the Australian Research Council (ARC) Discovery Project (DP170100436; DP200101249). We also acknowledge support by the National Nature Science Foundation of China (No. 51872157), Shenzhen Key Laboratory (ZD SYS201707271615073), and the Shenzhen Technical Plan Project (Nos. JCYJ20170412170911187 and JCYJ20170817161753629). We are grateful for assistance with the viscosity measurements by Dr. Barry Liu at the University of Technology Sydney.

Publisher Copyright:
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

deep eutectic solvents
dendrite growth
lithium-metal batteries
polymer electrolytes
self-healing

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1002/anie.202001793

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title = "Deep-Eutectic-Solvent-Based Self-Healing Polymer Electrolyte for Safe and Long-Life Lithium-Metal Batteries",

abstract = "The deployment of high-energy-density lithium-metal batteries has been greatly impeded by Li dendrite growth and safety concerns originating from flammable liquid electrolytes. Herein, we report a stable quasi-solid-state Li metal battery with a deep eutectic solvent (DES)-based self-healing polymer (DSP) electrolyte. This electrolyte was fabricated in a facile manner by in situ copolymerization of 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate (UPyMA) and pentaerythritol tetraacrylate (PETEA) monomers in a DES-based electrolyte containing fluoroethylene carbonate (FEC) as an additive. The well-designed DSP electrolyte simultaneously possesses non-flammability, high ionic conductivity and electrochemical stability, and dendrite-free Li plating. When applied in Li metal batteries with a LiMn2O4 cathode, the DSP electrolyte effectively suppressed manganese dissolution from the cathode and enabled high-capacity and a long lifespan at room and elevated temperatures.",

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author = "Pauline Jaumaux and Qi Liu and Dong Zhou and Xiaofu Xu and Tianyi Wang and Yizhou Wang and Feiyu Kang and Baohua Li and Guoxiu Wang",

note = "Funding Information: This research was supported by Australian Rail Manufactory CRC projects (RMCRC: R1.1.1 and R1.1.2) and the Australian Research Council (ARC) Discovery Project (DP170100436; DP200101249). We also acknowledge support by the National Nature Science Foundation of China (No. 51872157), Shenzhen Key Laboratory (ZD SYS201707271615073), and the Shenzhen Technical Plan Project (Nos. JCYJ20170412170911187 and JCYJ20170817161753629). We are grateful for assistance with the viscosity measurements by Dr. Barry Liu at the University of Technology Sydney. Funding Information: This research was supported by Australian Rail Manufactory CRC projects (RMCRC: R1.1.1 and R1.1.2) and the Australian Research Council (ARC) Discovery Project (DP170100436; DP200101249). We also acknowledge support by the National Nature Science Foundation of China (No. 51872157), Shenzhen Key Laboratory (ZD SYS201707271615073), and the Shenzhen Technical Plan Project (Nos. JCYJ20170412170911187 and JCYJ20170817161753629). We are grateful for assistance with the viscosity measurements by Dr. Barry Liu at the University of Technology Sydney. Publisher Copyright: {\textcopyright} 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

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Deep-Eutectic-Solvent-Based Self-Healing Polymer Electrolyte for Safe and Long-Life Lithium-Metal Batteries

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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