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The failure of Li metal anodes can be attributed to their unstable electrode/electrolyte interface, especially the continuous formation of solid electrolyte interphase (SEI) and dendrite growth. To address this challenge, scholars proposed the construction of artificial SEI (ASEI) as a promising strategy. The ASEI mainly homogenizes the distribution of Li+, mitigates dendrite growth, facilitates Li+ diffusion, and protects the Li metal anode from electrolyte erosion. This review comprehensively summarizes the recent progress in the construction of ASEI layers in terms of their chemical composition. Fundamental understanding of the mechanisms, design principles, and functions of the main components are analyzed. We also propose future research directions to facilitate the in-depth study of ASEI and its practical applications in Li metal batteries. This review offers perspectives that will greatly contribute to the design of practical Li metal electrodes.

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Developing artificial solid-state interphase for Li metal electrodes: recent advances and perspective

Show Author's information Yanyan WangMingnan LiFuhua YangJianfeng MaoZaiping Guo( )
School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia


The failure of Li metal anodes can be attributed to their unstable electrode/electrolyte interface, especially the continuous formation of solid electrolyte interphase (SEI) and dendrite growth. To address this challenge, scholars proposed the construction of artificial SEI (ASEI) as a promising strategy. The ASEI mainly homogenizes the distribution of Li+, mitigates dendrite growth, facilitates Li+ diffusion, and protects the Li metal anode from electrolyte erosion. This review comprehensively summarizes the recent progress in the construction of ASEI layers in terms of their chemical composition. Fundamental understanding of the mechanisms, design principles, and functions of the main components are analyzed. We also propose future research directions to facilitate the in-depth study of ASEI and its practical applications in Li metal batteries. This review offers perspectives that will greatly contribute to the design of practical Li metal electrodes.

Keywords: interfaces, artificial SEI, Li metal electrode, high-energy-density batteries



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Publication history
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Publication history

Received: 23 August 2023
Revised: 09 September 2023
Accepted: 10 September 2023
Published: 25 September 2023
Issue date: September 2023


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

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The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.