Journal
ACS CENTRAL SCIENCE
Volume 6, Issue 5, Pages 661-671Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscentsci.0c00351
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Funding
- Basic Science Center Project of NSFC [51788104]
- National Key R&D Program of China [2016YFA0202500]
- National Natural Science Foundation of China [21773264, 21805105, 21975091, 21773078]
- Fundamental Research Funds for the Central Universities of China [2662017QD028]
- Science and Technology Department of Hubei Province [2018FB238]
- China Postdoctoral Science Foundation [2019T120136, 2018M640185]
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Rechargeable Li metal batteries are one of the most attractive energy storage systems due to their high energy density. However, the hostless nature of Li, the excessive dendritic growth, and the accumulation of nonactive Li induce severe volume variation of Li anodes. The volume variation can give rise to a fracture of solid electrolyte interphase, continuous consumption of Li and electrolytes, low Coulombic efficiency, fast performance degradation, and finally short cycle life. This Outlook provides a comprehensive understanding of the origin and consequences of Li volume variation. Recent strategies to address this challenge are reviewed from liquid to gel to solid-state electrolyte systems. In the end, guidelines for structural design and fabrication suggestions for future long-life Li composite anodes are presented.
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