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Air-Stable Protective Layers for Lithium Anode Achieving Safe Lithium Metal Batteries

delete2022-12-18
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PRE
AI
R
Runjing Li
Y
Yining Fan
C
Chuan Zhao
胡安俊 cover
胡安俊 (Anjun Hu) *
B
Bo Zhou
M
Miao He
J
Jiahao Chen
Z
Zhongfu Yan
Y
Yu Pan
龙剑平 cover
龙剑平 (Jianping Long) *
DOI:10.1002/smtd.202201177delete
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Abstract

Abstract

En 中文
With markedly expansive demand in energy storage devices, rechargeable batteries will concentrate on achieving the high energy density and adequate security, especially under harsh operating conditions. Considering the high capacity (3860 mA h g(-1)) and low electrochemical potential (-3.04 V vs the standard hydrogen electrode), lithium metal is identified as one of the most promising anode materials, which has sparked a research boom. However, the intrinsically high reactivity triggers a repeating fracture/reconstruction process of the solid electrolyte interphase, side reactions with electrolyte and lithium dendrites, detrimental to the electrochemical performance of lithium metal batteries (LMBs). Even worse, when exposed to air, lithium metal will suffer severe atmospheric corrosion, especially the reaction with moisture, leading to grievous safety hazards. To settle these troubles, constructing air-stable protective layers (ASPLs) is an effective solution. In this review, besides the necessity of ASPLs is highlighted, the modified design criteria, focusing on enhancing chemical/mechanical stability and controlling ion flux, are proposed. Correspondingly, current research progress is comprehensively summarized and discussed. Finally, the perspectives of developing applicable lithium metal anodes (LMAs) are put forward. This review guides the direction for the practical use of LMAs, further pushing the evolution of safe and stable LMBs.
Keywords:
air-stable protective layers
lithium metal anodes
lithium metal batteries
performance optimization

Journal

Small Methods cover
Small Methods
IF:
9.1
Papers:
4.2K
Citations:
2.2W

Organization

C
Chengdu University of Technology
Scholars:
1.2W
Papers: 6.9K
Citations: 24
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