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Dinitride-free Li plating/stripping via lithiophilic seeds in a 3D matrix for enhanced Li-metal battery stability.
- Source :
- Nano Research; Sep2024, Vol. 17 Issue 9, p8163-8173, 11p
- Publication Year :
- 2024
-
Abstract
- The uncontrolled dendrite growth and volume change of Li metal during cycling lead to a short cycle life and safety concerns for Li-metal batteries, which hinders their practical application. Herein, we report the facile and energy-saving production of a three-dimensional (3D) CuZn matrix decorated with in-situ formed ZnO nano seeds (ZnO NS@3D CuZn) in pores and tunnels, which can serve as an anode current collector for dendrite-free Li-metal batteries. The 3D porous framework reduced the anode current density and accommodated Li volume change during the charge/discharge process. More importantly, the lithiophilic ZnO nano seeds induced fast Li deposition into the pores and tunnels of the 3D structure to effectively confine the deposited Li. As a positive effect, the volume change and Li dendrite growth during cycling are greatly suppressed. The half-cell with the ZnO NS@3D CuZn current collector exhibited a Coulombic efficiency (CE) of above 98% for over 320 and 240 cycles at 0.5 and 1 mA·cm<superscript>−2</superscript>, respectively. The Li@ZnO NS@3D CuZn symmetric cell achieves a lifespan of over 1500 h. Moreover, the Li@ZnO NS@3D CuZn∣∣LiFePO<subscript>4</subscript> full cell achieves a superb average CE of 99.4% and a long life of 600 cycles before the capacity retention rate decays to 90%. [ABSTRACT FROM AUTHOR]
- Subjects :
- TUNNELS
DENDRITIC crystals
DENDRITES
CYCLING
LITHIUM cells
Subjects
Details
- Language :
- English
- ISSN :
- 19980124
- Volume :
- 17
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Nano Research
- Publication Type :
- Academic Journal
- Accession number :
- 179142763
- Full Text :
- https://doi.org/10.1007/s12274-024-6864-2