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Homogenous metallic deposition regulated by defect-rich skeletons for sodium metal batteries
,
Zhenyu Guo ,
Rajesh Madhu ,
Fei Xie,
Ruixuan Chen,
Jing Wang ,
Mike Tebyetekerwa ,
Yong-Sheng Hu ,
Maria-Magdalena Titirici
Energy and Environmental Science, Volume: 14, Issue: 12, Pages: 6381 - 6393
Swansea University Author:
Jing Wang
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DOI (Published version): 10.1039/d1ee01346g
Abstract
Sodium metal batteries are attracting increasing attention on account of their high energy densities as well as the abundance of sodium-based resources. However, the uneven metallic deposition and dendrite formation during cycling hinder the application of sodium metal anodes. Carbon skeletons have...
| Published in: | Energy and Environmental Science |
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| ISSN: | 1754-5692 1754-5706 |
| Published: |
Royal Society of Chemistry (RSC)
2021
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa66856 |
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| Abstract: |
Sodium metal batteries are attracting increasing attention on account of their high energy densities as well as the abundance of sodium-based resources. However, the uneven metallic deposition and dendrite formation during cycling hinder the application of sodium metal anodes. Carbon skeletons have been reported in the literature to mitigate the dendrite formation during the plating and stripping of metallic sodium. Still, the role played by different carbon structural features (i.e., pores vs. defects) and relative mechanisms are not well understood, preventing the controllable interface engineering at the anode side. Here, we have rationally designed the structural features of sustainable carbon skeletons from a renewable precursor to unveil the roles of defects and pores for metallic deposition. The obtained carbon skeleton with rich defects and negligible pores exhibits the best performance when applied to protect metal anodes. After long cycling (>1200 hours), the retained high Coulombic efficiency (∼99.9%) of the plating and stripping processes indicates the importance of defects for inducing uniform metallic deposition. Combined with different types of cathodes (e.g., Prussian blue and sulfur), “anode-less” sodium metal batteries with enhanced electrochemical performance are also demonstrated in terms of sustainability. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
This work is supported by the grants from Engineering and Physical Sciences Research Council (EP/R021554/2, EP/S018204/2), a RAEng Chair in Emerging Technologies as well as Science and Technology Facilities Council (STFC) Batteries Network (ST/R006873/1). Z. X., Z. G., R. C., and J. W. acknowledge the China Scholarship Council for the PhD scholarships. R. M. thank the EU for the Marie Curie Research Fellowship (786952) through the project LIGNOCAP. M. T. acknowledges the Australian Government Research Training Program Scholarship. |
| Issue: |
12 |
| Start Page: |
6381 |
| End Page: |
6393 |