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Review Article

Solvation chemistry of electrolytes for stable anodes of lithium metal batteries

Yaohui Huang1, Bo Wen1, Zhuoliang Jiang1, Fujun Li1,2( )
Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin 300071, China
Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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Graphical Abstract

Solvation structure is the key of electrolyte engineering, which is composed of cations, anions, and additives. Solvation structures of electrolytes can be tuned via concentration and composition regulations and significantly affect electrolyte properties and interfacial reactions in lithium metal batteries.

Abstract

Lithium metal batteries (LMBs) have gained increasing attention owing to high energy density for large-scale energy storage applications. However, serious side reactions between Li anodes and organic electrolytes lead to low Columbic efficiency and Li dendrites. Although progress has been achieved in constructing electrode structures, the interfacial instability of Li anodes is still challenging. Solvation chemistry significantly affects the electrolyte properties and interfacial reactions, but the reaction mechanisms and the roles of each component in electrolytes are still vague. This review spotlights the recent development of electrolyte regulation with concentration and composition adjustments, aiming to understanding the correlation between solvation structures and Li anode stability. Further perspectives on the solvation design are provided in light of anode interfacial stability in LMBs.

Keywords

Li metal batteriessolvation structureselectrolyte engineeringconcentration adjustmentscomposition formulations

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Nano Research
Volume 16 Issue 6,
June 2023
Pages 8072-8081
DOI: 10.1007/s12274-022-4839-8
Cite this article:
Huang Y, Wen B, Jiang Z, et al. Solvation chemistry of electrolytes for stable anodes of lithium metal batteries. Nano Research, 2023, 16(6): 8072-8081. https://doi.org/10.1007/s12274-022-4839-8
Topics:
Electric batteries Electric energy storage
Part of a topical collection:
Conversion Reaction Lithium Metal Batteries

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Received: 22 June 2022
Revised: 27 July 2022
Accepted: 01 August 2022
Published: 21 September 2022
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