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Multifunctional fluorinated carbon dots artificial interface layer coupled with in-situ generated Zn2+conductor interlayer enable ultra-stable Zn anode
- Source :
- Nano Energy; January 2024, Vol. 119 Issue: 1
- Publication Year :
- 2024
-
Abstract
- Stabilizing zinc anode is a systematic project for aqueous zinc ion batteries (ZIBs), which needs to solve many problems such as dendrite growth, corrosion, hydrogen evolution, and other side reactions. It is urgent to develop a protective layer for zinc anode to solve these problems at one time. Based on the results of calculation, a hydrophobic multifunctional fluorinated carbon dots (F-CDs) protective layer with three kinds of zincophilic groups (-CO, -CHO and -F) was constructed on the Zn anode surface. As expected, these zincophilic groups on the F-CDs layer functioned as zincophilic sites to achieve uniform Zn deposition. Especially, the -F group could in-situ promote the formation of ZnF2under the F-CDs layer and the ZnF2layer is usually considered as a solid Zn2+conductor layer to further even Zn deposition. Additionally, the experimental results also demonstrated that the F-CDs layer coupled with in-situ generated ZnF2interlayer can not only tackle above issues in an integrated way, but also induce the deposition of Zn on the preferred (002) plane. Therefore, the Zn@F-CDs anode exhibits an ultra-long cycling life over 3500 h at 1 mA cm–2, together with an excellent average coulombic efficiency (99.32% for over 1100 h) in half cells.
Details
- Language :
- English
- ISSN :
- 22112855
- Volume :
- 119
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Nano Energy
- Publication Type :
- Periodical
- Accession number :
- ejs64404155
- Full Text :
- https://doi.org/10.1016/j.nanoen.2023.109053