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Thermally Conductive AlN‐Network Shield for Separators to Achieve Dendrite‐Free Plating and Fast Li‐Ion Transport toward Durable and High‐Rate Lithium‐Metal Anodes.
- Source :
-
Advanced Science . 6/23/2022, Vol. 9 Issue 18, p1-8. 8p. - Publication Year :
- 2022
-
Abstract
- Lithium‐metal anodes suffer from inadequate rate and cycling performances for practical application mainly due to the harmful dendrite growth, especially at high currents. Herein a facile construction of the porous and robust network with thermally conductive AlN nanowires onto the commercial polypropylene separator by convenient vacuum filtration is reported. The so‐constructed AlN‐network shield provides a uniform thermal distribution to realize homogeneous Li deposition, super electrolyte‐philic channels to enhance Li‐ion transport, and also a physical barrier to resist dendrite piercing as the last fence. Consequently, the symmetric Li|Li cell presents an ultralong lifetime over 8000 h (20 mA cm−2, 3 mAh cm−2) and over 1000 h even at an unprecedented high rate (80 mA cm−2, 80 mAh cm−2), which is far surpassing the corresponding performances reported to date. The corresponding Li|LiFePO4 cell delivers a high specific capacity of 84.3 mAh g−1 at 10 C. This study demonstrates an efficient approach with great application potential toward durable and high‐power Li–metal batteries and even beyond. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ANODES
*DENDRITIC crystals
*NANOWIRES
*POLYPROPYLENE
Subjects
Details
- Language :
- English
- ISSN :
- 21983844
- Volume :
- 9
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Advanced Science
- Publication Type :
- Academic Journal
- Accession number :
- 157616641
- Full Text :
- https://doi.org/10.1002/advs.202200411