High-Voltage and High-Safety Practical Lithium Batteries with Ethylene Carbonate-Free Electrolyte

Yu Wu; Dongsheng Ren; Xiang Liu; Gui Liang Xu; Xuning Feng; Yuejiu Zheng; Yalun Li; Min Yang; Yong Peng; Xuebing Han; Li Wang; Zonghai Chen; Yang Ren; Languang Lu; Xiangming He; Jitao Chen; Khalil Amine; Minggao Ouyang

doi:10.1002/aenm.202102299

High-Voltage and High-Safety Practical Lithium Batteries with Ethylene Carbonate-Free Electrolyte

Yu Wu, Dongsheng Ren, Xiang Liu, Gui Liang Xu, Xuning Feng^*, Yuejiu Zheng, Yalun Li, Min Yang, Yong Peng, Xuebing Han, Li Wang^*, Zonghai Chen, Yang Ren, Languang Lu, Xiangming He, Jitao Chen, Khalil Amine^*, Minggao Ouyang^*

^*Corresponding author for this work

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

83 Citations (Scopus)

Abstract

Serious safety issues are impeding the widespread adoption of high-energy lithium-ion batteries for transportation electrification and large-scale grid storage. Herein, a triple-salt ethylene carbonate (EC) free electrolyte for high-safety and high-energy pouch-type LiNi_0.8Mn_0.1Co_0.1O₂|graphite (NMC811|Gr) cells is reported. This EC-free electrolyte can effectively stabilize the NMC811 surface under high potential (up to 4.5 V), as well as generate a stable interphase to achieve a superior compatibility with the Gr anode. The electrolyte strategy enables significantly enhanced intrinsic safety (trigger temperature of thermal runaway (TR) increased by 67.0 °C), excellent electrochemical properties (4.2V, ≈100% after 200 cycles), and superior high voltage stability (4.5 V, 82.1% after 200 cycles). The work opens up a new avenue for developing novel electrolyte systems to build safer high-energy batteries for practical applications.

Original language	English
Article number	2102299
Journal	Advanced Energy Materials
Volume	11
Issue number	47
DOIs	https://doi.org/10.1002/aenm.202102299
Publication status	Published - 16 Dec 2021
Externally published	Yes

Keywords

EC-free electrolytes
high safety
high voltage
practical lithium batteries

UN SDGs

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

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10.1002/aenm.202102299

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Wu, Y., Ren, D., Liu, X., Xu, G. L., Feng, X., Zheng, Y., Li, Y., Yang, M., Peng, Y., Han, X., Wang, L., Chen, Z., Ren, Y., Lu, L., He, X., Chen, J., Amine, K., & Ouyang, M. (2021). High-Voltage and High-Safety Practical Lithium Batteries with Ethylene Carbonate-Free Electrolyte. Advanced Energy Materials, 11(47), Article 2102299. https://doi.org/10.1002/aenm.202102299

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title = "High-Voltage and High-Safety Practical Lithium Batteries with Ethylene Carbonate-Free Electrolyte",

abstract = "Serious safety issues are impeding the widespread adoption of high-energy lithium-ion batteries for transportation electrification and large-scale grid storage. Herein, a triple-salt ethylene carbonate (EC) free electrolyte for high-safety and high-energy pouch-type LiNi0.8Mn0.1Co0.1O2|graphite (NMC811|Gr) cells is reported. This EC-free electrolyte can effectively stabilize the NMC811 surface under high potential (up to 4.5 V), as well as generate a stable interphase to achieve a superior compatibility with the Gr anode. The electrolyte strategy enables significantly enhanced intrinsic safety (trigger temperature of thermal runaway (TR) increased by 67.0 °C), excellent electrochemical properties (4.2V, ≈100% after 200 cycles), and superior high voltage stability (4.5 V, 82.1% after 200 cycles). The work opens up a new avenue for developing novel electrolyte systems to build safer high-energy batteries for practical applications.",

keywords = "EC-free electrolytes, high safety, high voltage, practical lithium batteries",

author = "Yu Wu and Dongsheng Ren and Xiang Liu and Xu, {Gui Liang} and Xuning Feng and Yuejiu Zheng and Yalun Li and Min Yang and Yong Peng and Xuebing Han and Li Wang and Zonghai Chen and Yang Ren and Languang Lu and Xiangming He and Jitao Chen and Khalil Amine and Minggao Ouyang",

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AU - Wu, Yu

AU - Ren, Dongsheng

AU - Liu, Xiang

AU - Xu, Gui Liang

AU - Feng, Xuning

AU - Zheng, Yuejiu

AU - Li, Yalun

AU - Yang, Min

AU - Peng, Yong

AU - Han, Xuebing

AU - Wang, Li

AU - Chen, Zonghai

AU - Ren, Yang

AU - Lu, Languang

AU - He, Xiangming

AU - Chen, Jitao

AU - Amine, Khalil

AU - Ouyang, Minggao

PY - 2021/12/16

Y1 - 2021/12/16

N2 - Serious safety issues are impeding the widespread adoption of high-energy lithium-ion batteries for transportation electrification and large-scale grid storage. Herein, a triple-salt ethylene carbonate (EC) free electrolyte for high-safety and high-energy pouch-type LiNi0.8Mn0.1Co0.1O2|graphite (NMC811|Gr) cells is reported. This EC-free electrolyte can effectively stabilize the NMC811 surface under high potential (up to 4.5 V), as well as generate a stable interphase to achieve a superior compatibility with the Gr anode. The electrolyte strategy enables significantly enhanced intrinsic safety (trigger temperature of thermal runaway (TR) increased by 67.0 °C), excellent electrochemical properties (4.2V, ≈100% after 200 cycles), and superior high voltage stability (4.5 V, 82.1% after 200 cycles). The work opens up a new avenue for developing novel electrolyte systems to build safer high-energy batteries for practical applications.

AB - Serious safety issues are impeding the widespread adoption of high-energy lithium-ion batteries for transportation electrification and large-scale grid storage. Herein, a triple-salt ethylene carbonate (EC) free electrolyte for high-safety and high-energy pouch-type LiNi0.8Mn0.1Co0.1O2|graphite (NMC811|Gr) cells is reported. This EC-free electrolyte can effectively stabilize the NMC811 surface under high potential (up to 4.5 V), as well as generate a stable interphase to achieve a superior compatibility with the Gr anode. The electrolyte strategy enables significantly enhanced intrinsic safety (trigger temperature of thermal runaway (TR) increased by 67.0 °C), excellent electrochemical properties (4.2V, ≈100% after 200 cycles), and superior high voltage stability (4.5 V, 82.1% after 200 cycles). The work opens up a new avenue for developing novel electrolyte systems to build safer high-energy batteries for practical applications.

KW - EC-free electrolytes

KW - high safety

KW - high voltage

KW - practical lithium batteries

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ER -

High-Voltage and High-Safety Practical Lithium Batteries with Ethylene Carbonate-Free Electrolyte

Abstract

Keywords

UN SDGs

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