Volume 60, Issue 52 pp. 27086-27094
Research Article

Fire-Retardant, Stable-Cycling and High-Safety Sodium Ion Battery

Zhuo Yang

Zhuo Yang

Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035 China

School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444 China

These authors contributed equally to this work.

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Jian He

Jian He

School of Physics and Electronics, Hunan University, Changsha, 410082 China

These authors contributed equally to this work.

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Dr. Wei-Hong Lai

Dr. Wei-Hong Lai

Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007 Australia

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Dr. Jian Peng

Dr. Jian Peng

Institute for Superconducting & Electronic Materials, University of Wollongong, Wollongong, NSW, 2500 Australia

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Dr. Xiao-Hao Liu

Dr. Xiao-Hao Liu

School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444 China

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Dr. Xiang-Xi He

Dr. Xiang-Xi He

School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444 China

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Xu-Feng Guo

Xu-Feng Guo

School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444 China

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Dr. Li Li

Dr. Li Li

School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444 China

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Prof. Yun Qiao

Prof. Yun Qiao

School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444 China

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Prof. Jian-Min Ma

Prof. Jian-Min Ma

School of Physics and Electronics, Hunan University, Changsha, 410082 China

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Prof. Minghong Wu

Prof. Minghong Wu

School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444 China

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Prof. Shu-Lei Chou

Corresponding Author

Prof. Shu-Lei Chou

Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035 China

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First published: 01 October 2021
Citations: 104

Graphical Abstract

Safety is always a topic of concern after reports of devices catching fire due to battery failure. Using non-flammable electrolyte as an ultimate solution is difficult to be applied to commercial batteries because of various problems such as poor compatibility, high viscosity and so on. Here, we report a non-flammable electrolyte with excellent comprehensive performance, and applied it to sodium-ion pouch cells with different promising materials.

Abstract

The safety of energy storage equipment has always been a stumbling block to the development of battery, and sodium ion battery is no exception. However, as an ultimate solution, the use of non-flammable electrolyte is susceptible to the side effects, and its poor compatibility with electrode, causing failure of batteries. Here, we report a non-flammable electrolyte design to achieve high-performance sodium ion battery, which resolves the dilemma via regulating the solvation structure of electrolyte by hydrogen bonds and optimizing the electrode–electrolyte interphase. The reported non-flammable electrolyte allows stable charge-discharge cycling of both sodium vanadium phosphate@hard carbon and Prussian blue@hard carbon full pouch cell for more than 120 cycles with a capacity retention of >85 % and high cycling Coulombic efficiency (99.7 %).

Conflict of interest

The authors declare no conflict of interest.

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