Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction

In this work, catalytic performance of MoS2 supported on Mo2TiC2 and Ti3C2 MXenes towards the oxygen reduction reaction (ORR) was studied. These materials were synthesised through an etching route of MAX phases as precursors of MXenes, followed by a hydrothermal treatment to coat them with MoS2. Thi...

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Autores: Pastor Tejera, Elena María, Remedios Díaz, Yapci, Delgado Barreto, Stefan, Calderón, Juan Carlos, Calvillo, Laura, Arévalo, María del Carmen
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad de La Laguna (ULL)
Repositorio:RIULL. Repositorio Institucional de la Universidad de La Laguna
OAI Identifier:oai:riull.ull.es:915/41960
Acceso en línea:http://riull.ull.es/xmlui/handle/915/41960
Access Level:acceso abierto
Palabra clave:Hybrid Electrocatalysts
MoS2-MXenes
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spelling Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reactionPastor Tejera, Elena MaríaRemedios Díaz, YapciDelgado Barreto, StefanCalderón, Juan CarlosCalvillo, LauraArévalo, María del CarmenHybrid ElectrocatalystsMoS2-MXenesIn this work, catalytic performance of MoS2 supported on Mo2TiC2 and Ti3C2 MXenes towards the oxygen reduction reaction (ORR) was studied. These materials were synthesised through an etching route of MAX phases as precursors of MXenes, followed by a hydrothermal treatment to coat them with MoS2. This procedure generated MoS2 nanospheres covering the MXenes, which were verified by SEM-EDX mapping, Raman spectroscopy and XPS. Activity of these materials towards ORR was studied by RRDE, comparing its performance with that of individual MoS2 and MXenes. As main features, it was demonstrated that production of HOO− occurring on the composites decreases in comparison with individual materials. Long-term stability tests performed in O2-saturated electrolyte showed a drop in the activity of the materials due to the increase in the production of HOO−, although no morphological or compositional changes were observed. Despite this result, the improvement of the catalytic properties of the individual materials means that these composites can be considered as candidates to be used as supports of active non-noble metal nanoparticles in the cathodes of anion exchange membrane fuel cells (AEMFCs).QuímicaInstituto Universitario de Materiales y Nanotecnología CISEL - Ciencia de superficies y electrocatálisis202520252024info:eu-repo/semantics/articleapplication/pdfhttp://riull.ull.es/xmlui/handle/915/41960reponame:RIULL. Repositorio Institucional de la Universidad de La Lagunainstname:Universidad de La Laguna (ULL)InglésChemElectroChem 2024, 11, e202300673Licencia Creative Commons (Reconocimiento-No comercial-Sin obras derivadas 4.0 Internacional)info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es_ESoai:riull.ull.es:915/419602026-06-22T13:13:57Z
dc.title.none.fl_str_mv Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction
title Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction
spellingShingle Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction
Pastor Tejera, Elena María
Hybrid Electrocatalysts
MoS2-MXenes
title_short Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction
title_full Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction
title_fullStr Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction
title_full_unstemmed Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction
title_sort Highly active MoS2-MXenes hybrid electrocatalysts towards the oxygen reduction reaction
dc.creator.none.fl_str_mv Pastor Tejera, Elena María
Remedios Díaz, Yapci
Delgado Barreto, Stefan
Calderón, Juan Carlos
Calvillo, Laura
Arévalo, María del Carmen
author Pastor Tejera, Elena María
author_facet Pastor Tejera, Elena María
Remedios Díaz, Yapci
Delgado Barreto, Stefan
Calderón, Juan Carlos
Calvillo, Laura
Arévalo, María del Carmen
author_role author
author2 Remedios Díaz, Yapci
Delgado Barreto, Stefan
Calderón, Juan Carlos
Calvillo, Laura
Arévalo, María del Carmen
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Química
Instituto Universitario de Materiales y Nanotecnología CISEL - Ciencia de superficies y electrocatálisis
dc.subject.none.fl_str_mv Hybrid Electrocatalysts
MoS2-MXenes
topic Hybrid Electrocatalysts
MoS2-MXenes
description In this work, catalytic performance of MoS2 supported on Mo2TiC2 and Ti3C2 MXenes towards the oxygen reduction reaction (ORR) was studied. These materials were synthesised through an etching route of MAX phases as precursors of MXenes, followed by a hydrothermal treatment to coat them with MoS2. This procedure generated MoS2 nanospheres covering the MXenes, which were verified by SEM-EDX mapping, Raman spectroscopy and XPS. Activity of these materials towards ORR was studied by RRDE, comparing its performance with that of individual MoS2 and MXenes. As main features, it was demonstrated that production of HOO− occurring on the composites decreases in comparison with individual materials. Long-term stability tests performed in O2-saturated electrolyte showed a drop in the activity of the materials due to the increase in the production of HOO−, although no morphological or compositional changes were observed. Despite this result, the improvement of the catalytic properties of the individual materials means that these composites can be considered as candidates to be used as supports of active non-noble metal nanoparticles in the cathodes of anion exchange membrane fuel cells (AEMFCs).
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://riull.ull.es/xmlui/handle/915/41960
url http://riull.ull.es/xmlui/handle/915/41960
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv ChemElectroChem 2024, 11, e202300673
dc.rights.none.fl_str_mv Licencia Creative Commons (Reconocimiento-No comercial-Sin obras derivadas 4.0 Internacional)
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es_ES
rights_invalid_str_mv Licencia Creative Commons (Reconocimiento-No comercial-Sin obras derivadas 4.0 Internacional)
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es_ES
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:RIULL. Repositorio Institucional de la Universidad de La Laguna
instname:Universidad de La Laguna (ULL)
instname_str Universidad de La Laguna (ULL)
reponame_str RIULL. Repositorio Institucional de la Universidad de La Laguna
collection RIULL. Repositorio Institucional de la Universidad de La Laguna
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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