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Energy Materials and Devices 2023, 1(1): 9370003 https://doi.org/10.26599/EMD.2023.9370003
Review | Open Access | Issue | Published: 18 September 2023

Weakly solvating electrolytes for next-generation lithium batteries: design principles and recent advances

Show Author's Information Zhijie Wang,  Biao Zhang( )
Department of Applied Physics & Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong 999077, China
Keywords:
lithium batteries, solvation structure, weakly solvating electrolytes, salt design, solvent engineering
Cite this article:
Wang Z, Zhang B. Weakly solvating electrolytes for next-generation lithium batteries: design principles and recent advances. Energy Materials and Devices, 2023, 1(1): 9370003. https://doi.org/10.26599/EMD.2023.9370003
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Abstract Full text About this article

Lithium (Li) batteries are major players in the power source market of electric vehicles and portable electronic devices. Electrolytes are critical to determining the performance of Li batteries. Conventional electrolytes fall behind the ever-growing demands for fast-charging, wide-temperature operation, and safety properties of Li batteries. Despite the great success of (localized) high-concentration electrolytes, they still suffer from disadvantages, such as low ionic conductivity and high cost. Weakly solvating electrolytes (WSEs), also known as low-solvating electrolytes, offer another solution to these challenges, and they have attracted intensive research interests in recent years. This contribution reviews the working mechanisms, design principles, and recent advances in the development of WSEs. A summary and perspective regarding future research directions in this field is also provided. The insights will benefit academic and industrial communities in the design of safe and high-performance next-generation Li batteries.


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About this article

Weakly solvating electrolytes for next-generation lithium batteries: design principles and recent advances

Show Author's information Zhijie Wang, Biao Zhang( )
Department of Applied Physics & Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong 999077, China

Abstract

Lithium (Li) batteries are major players in the power source market of electric vehicles and portable electronic devices. Electrolytes are critical to determining the performance of Li batteries. Conventional electrolytes fall behind the ever-growing demands for fast-charging, wide-temperature operation, and safety properties of Li batteries. Despite the great success of (localized) high-concentration electrolytes, they still suffer from disadvantages, such as low ionic conductivity and high cost. Weakly solvating electrolytes (WSEs), also known as low-solvating electrolytes, offer another solution to these challenges, and they have attracted intensive research interests in recent years. This contribution reviews the working mechanisms, design principles, and recent advances in the development of WSEs. A summary and perspective regarding future research directions in this field is also provided. The insights will benefit academic and industrial communities in the design of safe and high-performance next-generation Li batteries.

Keywords: lithium batteries, solvation structure, weakly solvating electrolytes, salt design, solvent engineering

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Publication history
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Acknowledgements
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Publication history

Received: 03 August 2023
Revised: 21 August 2023
Accepted: 23 August 2023
Published: 18 September 2023
Issue date: September 2023

Copyright

© The Author(s) 2023. Published by Tsinghua University Press.

Acknowledgements

This work was supported by the Hong Kong Polytechnic University (No. CDBJ). Z. Wang thanks the funding support from the Centrally Funded Postdoctoral Fellowship Scheme of the Hong Kong Polytechnic University (No. 1-YXAU).

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