Volume 62, Issue 8 e202216189
Research Article

Non-Flammable Electrolyte Enables High-Voltage and Wide-Temperature Lithium-Ion Batteries with Fast Charging

Yeguo Zou

Yeguo Zou

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China

University of Science and Technology of China, Hefei, 230026 China

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Dr. Zheng Ma

Dr. Zheng Ma

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China

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Gang Liu

Gang Liu

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China

University of Science and Technology of China, Hefei, 230026 China

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Dr. Qian Li

Dr. Qian Li

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China

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Dongming Yin

Dongming Yin

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China

University of Science and Technology of China, Hefei, 230026 China

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Xuejian Shi

Xuejian Shi

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China

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Dr. Zhen Cao

Dr. Zhen Cao

Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900 Saudi Arabia

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Zhengnan Tian

Zhengnan Tian

Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900 Saudi Arabia

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Hun Kim

Hun Kim

Department of Energy Engineering, Hanyang University, Seoul, 133–791 (Republic of Korea

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Dr. Yingjun Guo

Dr. Yingjun Guo

Huzhou Kunlun Enchem Power Battery Materials Company, Ltd., Huzhou, 313000 P. R. China

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Dr. Chunsheng Sun

Dr. Chunsheng Sun

Huzhou Kunlun Enchem Power Battery Materials Company, Ltd., Huzhou, 313000 P. R. China

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Prof. Luigi Cavallo

Prof. Luigi Cavallo

Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900 Saudi Arabia

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Prof. Limin Wang

Corresponding Author

Prof. Limin Wang

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China

University of Science and Technology of China, Hefei, 230026 China

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Prof. Husam N. Alshareef

Corresponding Author

Prof. Husam N. Alshareef

Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900 Saudi Arabia

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Prof. Yang-Kook Sun

Corresponding Author

Prof. Yang-Kook Sun

Department of Energy Engineering, Hanyang University, Seoul, 133–791 (Republic of Korea

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Prof. Jun Ming

Corresponding Author

Prof. Jun Ming

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China

University of Science and Technology of China, Hefei, 230026 China

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First published: 25 December 2022
Citations: 82

Graphical Abstract

A novel non-flammable electrolyte that endows Li-ion battery with high voltage, wide temperature, and fast charging is developed. Moreover, a new solvation chemistry-derived dynamic interfacial model, involving the kinetic and thermodynamic properties of electrolyte components on the cathode and anode simultaneously, was presented for the first time to interpret such excellent performance and guide the electrolyte design at a molecular scale.

Abstract

Electrolyte design has become ever more important to enhance the performance of lithium-ion batteries (LIBs). However, the flammability issue and high reactivity of the conventional electrolytes remain a major problem, especially when the LIBs are operated at high voltage and extreme temperatures. Herein, we design a novel non-flammable fluorinated ester electrolyte that enables high cycling stability in wide-temperature variations (e.g., −50 °C–60 °C) and superior power capability (fast charge rates up to 5.0 C) for the graphite||LiNi0.8Co0.1Mn0.1O2 (NCM811) battery at high voltage (i.e., >4.3 V vs. Li/Li+). Moreover, this work sheds new light on the dynamic evolution and interaction among the Li+, solvent, and anion at the molecular level. By elucidating the fundamental relationship between the Li+ solvation structure and electrochemical performance, we can facilitate the development of high-safety and high-energy-density batteries operating in harsh conditions.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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