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Alkali metal insertion into hard carbon – the full picture

Holger Euchner, Bhaghavathi P. Vinayan, Anji Munnangi Orcid Logo, Maximilian Fichtner, Axel Groß

Journal of Materials Chemistry A, Volume: 8, Issue: 28, Pages: 14205 - 14213

Swansea University Author: Anji Munnangi Orcid Logo

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DOI (Published version): 10.1039/d0ta04868b

Abstract

Carbon-based anodes are technologically highly relevant for Li and post-Li ion batteries. While the storage mechanism of Li in graphite is essentially understood, the alkali metal intercalation into carbon derivatives has been strongly debated. Here, we present a combined computational and experimen...

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Published in: Journal of Materials Chemistry A
ISSN: 2050-7488 2050-7496
Published: Royal Society of Chemistry (RSC) 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa54757
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Abstract: Carbon-based anodes are technologically highly relevant for Li and post-Li ion batteries. While the storage mechanism of Li in graphite is essentially understood, the alkali metal intercalation into carbon derivatives has been strongly debated. Here, we present a combined computational and experimental study on the intercalation of Li and Na into hard carbon, elaborating on the impact of different alkali metals on the storage mechanism. Our results give strong evidence that the intercalation of Li and Na into hard carbon follows the same route and moreover, shows that in operando Raman scattering is a sensitive and powerful tool for characterizing the intercalation mechanism in carbon based materials. In fact, by exploiting the so-called double resonance, even information on the electronic structure can be obtained. Finally, theoretical predictions for the insertion mechanism of K are presented.
College: Faculty of Science and Engineering
Issue: 28
Start Page: 14205
End Page: 14213

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