期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 45, 页码 42261-42270出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b15468
关键词
lithium metal anode; lithium metal batteries; lithium deposition; lithium adsorption; aluminum nitride
资金
- Ningbo Natural Science Foundation [2018A610014]
- Zhejiang Provincial Natural Science Foundation of China [LQ17E020004]
- Ningbo 2025 Project [2018B10060]
- National Key R&D Program of China [2018YFB0905400]
Sponge-like lithium (Li) deposition results in high-surface-area morphology that harmfully accelerates the side reactions between Li and electrolyte, arousing serious safety issues of next high energy density Li metal batteries (LMBs). Herein, we propose a strategy to suppress the sponge-like Li deposition by plating Li metal on aluminum nitride (AlN)-modified substrates. For a practical Li deposition of 4 mAh cm(-2) on a AlN-modified copper (Cu) electrode, the roughness and thickness of the as-deposited Li layer are only similar to 10% and similar to 50% of those for the Li layer deposited on bare Cu. Only based on the compacted Li deposition layer without any other protective remedies, the AlN-modified Cu electrode could provide a Li cycling life of 5 times longer than that on bare Cu, and an AlN-modified carbon felt was proved as an efficient interlayer to boost the cycling stability of Li parallel to LiFePO4 batteries. These results demonstrate the high importance of suppressing the sponge-like Li deposition for high energy density LMBs.
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