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Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries

Activated hard carbons, obtained from the pyrolysis of various waste biomasses, were prepared and characterized for use as the active material for the fabrication of battery electrodes. The preparation consisted of a pyrolysis process, followed by an activation with KOH and a further high-temperatur...

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Autores principales: Pozio, Alfonso, Di Carli, Mariasole, Aurora, Annalisa, Falconieri, Mauro, Della Seta, Livia, Prosini, Pier Paolo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9027466/
https://www.ncbi.nlm.nih.gov/pubmed/35458062
http://dx.doi.org/10.3390/nano12081349
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author Pozio, Alfonso
Di Carli, Mariasole
Aurora, Annalisa
Falconieri, Mauro
Della Seta, Livia
Prosini, Pier Paolo
author_facet Pozio, Alfonso
Di Carli, Mariasole
Aurora, Annalisa
Falconieri, Mauro
Della Seta, Livia
Prosini, Pier Paolo
author_sort Pozio, Alfonso
collection PubMed
description Activated hard carbons, obtained from the pyrolysis of various waste biomasses, were prepared and characterized for use as the active material for the fabrication of battery electrodes. The preparation consisted of a pyrolysis process, followed by an activation with KOH and a further high-temperature thermal process. TG and DTA were used to discriminate the steps of the activation process, while SEM, XRD, and Raman characterization were employed to evaluate the effects of activation. The activated carbons were tested as electrodes in lithium-sulfur and lithium-ion batteries. The carbonaceous materials coming from cherry stones and walnut shells have proved to be particularly suitable as electrode components. When used as anodes in lithium-ion batteries, both carbons exhibited a high first cycle discharge capacity, which was not restored during the next charge. After the first two cycles, in which there was a marked loss of capacity, both electrodes showed good reversibility. When used as cathodes in lithium-sulfur batteries, both carbons exhibited good catalytic activity against the redox reaction involving sulfur species with good cycle stability and satisfactory Coulombic efficiency.
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spelling pubmed-90274662022-04-23 Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries Pozio, Alfonso Di Carli, Mariasole Aurora, Annalisa Falconieri, Mauro Della Seta, Livia Prosini, Pier Paolo Nanomaterials (Basel) Article Activated hard carbons, obtained from the pyrolysis of various waste biomasses, were prepared and characterized for use as the active material for the fabrication of battery electrodes. The preparation consisted of a pyrolysis process, followed by an activation with KOH and a further high-temperature thermal process. TG and DTA were used to discriminate the steps of the activation process, while SEM, XRD, and Raman characterization were employed to evaluate the effects of activation. The activated carbons were tested as electrodes in lithium-sulfur and lithium-ion batteries. The carbonaceous materials coming from cherry stones and walnut shells have proved to be particularly suitable as electrode components. When used as anodes in lithium-ion batteries, both carbons exhibited a high first cycle discharge capacity, which was not restored during the next charge. After the first two cycles, in which there was a marked loss of capacity, both electrodes showed good reversibility. When used as cathodes in lithium-sulfur batteries, both carbons exhibited good catalytic activity against the redox reaction involving sulfur species with good cycle stability and satisfactory Coulombic efficiency. MDPI 2022-04-14 /pmc/articles/PMC9027466/ /pubmed/35458062 http://dx.doi.org/10.3390/nano12081349 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Pozio, Alfonso
Di Carli, Mariasole
Aurora, Annalisa
Falconieri, Mauro
Della Seta, Livia
Prosini, Pier Paolo
Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries
title Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries
title_full Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries
title_fullStr Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries
title_full_unstemmed Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries
title_short Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries
title_sort hard carbons for use as electrodes in li-s and li-ion batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9027466/
https://www.ncbi.nlm.nih.gov/pubmed/35458062
http://dx.doi.org/10.3390/nano12081349
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