4.6 Review

Solid Electrolyte Interphase Architecture for a Stable Li-electrolyte Interface

期刊

CHEMISTRY-AN ASIAN JOURNAL
卷 -, 期 -, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.202300453

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Li metal anode; Li dendrites; artificial SEI; SEI design

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Li metal anode is considered as the ultimate anode material for rechargeable batteries due to its high theoretical specific capacity and low negative electrochemical potential. However, the uncontrolled Li dendrites and side reactions with electrolytes hinder its commercialization. This review summarizes the strategies for artificial solid electrolyte interphase (SEI) engineering in liquid and solid electrolytes. The ideal artificial SEI should consider the component, distribution, and structure. This review provides perspectives for SEI design and lays a foundation for future research and development of Li metal batteries.
Li metal anode has attracted extensive attention as the state-of-the-art anode material for rechargeable batteries. It is defined as the ultimate anode material for the high theoretical specific capacity (3860 mAh g(-1)) and the lowest negative electrochemical potential (-3.04 V vs. Standard Hydrogen Electrode). However, the uncontrolled Li dendrites and the spontaneous side reactions between Li and electrolytes hinder its commercialization. To overcome these obstacles, the optimized solid electrolyte interphase (SEI) with excellent performance was proposed by the artificial method. The improved performance includes high stability, ionic conductivity, compactness, and flexibility. In this review, the strategies for artificial SEI engineering in liquid and solid electrolytes are summarized. To fabricate an ideal artificial SEI, the component, distribution, and structure should be fully and reasonably considered. This review will also provide perspectives for the SEI design and lay a foundation for the future research and development of Li metal batteries.

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