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Silicon nanowire growth on carbon cloth for flexible Li-ion battery anodes
Date
2022
Abstract
Binder and conductive additive-free Si nanowires (NWs) grown directly on the current collector have shown great potential as next generation Li-ion battery anodes. However, low active material mass loadings and consequentially low areal capacities have remained a challenge in their development. Herein, we report the high-density growth of Si NWs on carbon cloth (CC) for use as Li-ion battery anodes. The NW growth reactions were carried out using a modified, glassware-based solvent vapor growth (SVG) process. Optimized growth conditions were applied to CC substrates to generate flexible Si NW anodes for Li-ion batteries. Battery testing revealed high areal charge and discharge capacities (>2 mAh/cm2) compared to Si NWs grown on stainless steel (SS) substrates (~0.3 mAh/cm2) and stable long-term cycling with 80% capacity retention after 200 cycles. The findings reported herein represent a significant advancement in the field in terms of achievable areal capacity enabled by a low-cost glassware-based system.
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Citation
Materials Today Energy, 27, 101030
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Storan_2022_Silicon.pdf
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Funding Information
T.K. acknowledges support from the Sustainable Energy Authority of Ireland through the Research Development and Demonstration Funding Program (grant no. 19/RDD/548) and from Enterprise Ireland through the Innovation Partnership Program (grant no. IP 2019 0910)
Sustainable Development Goals
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Article
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https://creativecommons.org/licenses/by-nc-sa/4.0/