期刊
ADVANCED MATERIALS INTERFACES
卷 9, 期 11, 页码 -出版社
WILEY
DOI: 10.1002/admi.202102283
关键词
anion receptor; artificial SEI; F-; B-containing; lithium metal anode; quasi-solid-state pouch cell
资金
- National Natural Science Foundation of China [U1802256 21773118]
- Leading Edge Technology of Jiangsu Province [BK20202008]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Free Exploration Basic Research Project in Shenzhen Virtual University Park [2021Szvup062]
- Research and Practice Innovation Program in Nanjing University of Aeronautics and Astronautics [xcxjh20210603]
- Graduate student innovation experiment competition cultivation project [4003-016001]
By forming an artificial solid electrolyte interphase on the surface of lithium metal, the limitations of the active interface of lithium metal are overcome, resulting in an extended cycling life and stability.
Lithium metal anode matching solid electrolyte is an effective way to achieve high safety and high specific energy batteries, while the active interface of lithium metal has become a bottleneck problem that limits its application. Here, the challenges by forming an artificial solid electrolyte interphase (F-, B-containing) on lithium metal surface are surmounted. It demonstrates an extended cycling life over 2000 h of continuous plating/stripping at a high current density of 1.5 mA cm(-2). Nuclear magnetic resonance spectra prove the effectiveness of anion receptors for decoupling Li+-F-. The distribution and morphological features of the LiF/B artificial hybrid interphase can be observed from energy-dispersive spectroscopy and scanning electron microscopy. Specifically, the treated metal lithium anode is also stable in the quasi-solid-state pouch cell (polyvinylidene fluoride-hexafluoro propylene-LLZTO) system, which can make the rotor of the small aircraft rotate quickly and stably for 9.2 min.
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