Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 4, Pages 1094-1099Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201811955
Keywords
alloys; dendrites; Li anodes; lithium metal batteries
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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, 21773078, 51703052, 21805038]
- Fundamental Research Funds for the Central Universities of China [2662017QD028, 2662015PY163]
- Science and Technology Department of Hubei Province [2018FB238]
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The uncontrolled growth of Li dendrites upon cycling might result in low coulombic efficiency and severe safety hazards. Herein, a lithiophilic binary lithium-aluminum alloy layer, which was generated through an in situ electrochemical process, was utilized to guide the uniform metallic Li nucleation and growth, free from the formation of dendrites. Moreover, the formed LiAl alloy layer can function as a Li reservoir to compensate the irreversible Li loss, enabling long-term stability. The protected Li electrode shows superior cycling over 1700 h in a Li|Li symmetric cell.
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