Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.

Oxygen reduction reaction (ORR) is one of the key features for the efficient functioning of several energy conversion devices such as fuel cells, appearing the necessity of development of new low-cost catalyst materials. Heteroatom-doped carbon materials have attracted attention in this field due to...

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Authors: Pastor Tejera, Elena María, Fajardo, Sergio, Ocón, P., Rodríguez Marrero, José Luis
Format: article
Publication Date:2023
Country:España
Institution:Universidad de La Laguna (ULL)
Repository:RIULL. Repositorio Institucional de la Universidad de La Laguna
OAI Identifier:oai:riull.ull.es:915/41990
Online Access:http://riull.ull.es/xmlui/handle/915/41990
Access Level:Open access
Keyword:Direct ethanol fuel cell
Oxygen reduction reaction
Reduced graphene oxide
Heteroatom-doped graphene materials, non-noble metal catalyst
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spelling Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.Pastor Tejera, Elena MaríaFajardo, SergioOcón, P.Rodríguez Marrero, José LuisDirect ethanol fuel cellOxygen reduction reactionReduced graphene oxideHeteroatom-doped graphene materials, non-noble metal catalystOxygen reduction reaction (ORR) is one of the key features for the efficient functioning of several energy conversion devices such as fuel cells, appearing the necessity of development of new low-cost catalyst materials. Heteroatom-doped carbon materials have attracted attention in this field due to its physicochemical and electronic properties. In this work, a nitrogen and sulfur doped material with anchored Co3O4 nanoparticles (Co/SN-rGO) is proposed as cathode catalyst for direct ethanol fuel cells (DEFCs) and results are compared with different doped graphene nanomaterials (GMs). The effect of the heteroatoms and cobalt oxide nanoparticles in the final efficiency was studied. Synthesized materials were characterized and the activity of Co/SN-rGO and GMs for the ORR was studied. Co/SN-rGO presents high ORR performance in terms of onset potential (Eonset), 0.86 V (vs RHE) and half-wave potential (E1/2) 0.72 V (vs RHE). Tafel analysis shows 60 mV dec-1 at low overpotential for potential dependent ORR mechanism. Besides, when Co/SN-rGO performance is evaluated in a DEFC using a fuel cell test station, main results indicate higher catalytic activity, stability, and ethanol tolerance of Co/SN-rGO in comparison to a carbon-supported Pt catalyst.QuímicaInstituto Universitario de Materiales y Nanotecnología CISEL - Ciencia de superficies y electrocatálisis202520252023info:eu-repo/semantics/articleapplication/pdfhttp://riull.ull.es/xmlui/handle/915/41990reponame:RIULL. Repositorio Institucional de la Universidad de La Lagunainstname:Universidad de La Laguna (ULL)InglésChemical Engineering Journal 461 (2023) 142053Licencia 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:915/419902026-06-22T13:13:57Z
dc.title.none.fl_str_mv Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.
title Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.
spellingShingle Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.
Pastor Tejera, Elena María
Direct ethanol fuel cell
Oxygen reduction reaction
Reduced graphene oxide
Heteroatom-doped graphene materials, non-noble metal catalyst
title_short Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.
title_full Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.
title_fullStr Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.
title_full_unstemmed Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.
title_sort Co supported on N and S dual-doped reduced graphene oxide as highly active oxygen-reduction catalyst for direct ethanol fuel cells.
dc.creator.none.fl_str_mv Pastor Tejera, Elena María
Fajardo, Sergio
Ocón, P.
Rodríguez Marrero, José Luis
author Pastor Tejera, Elena María
author_facet Pastor Tejera, Elena María
Fajardo, Sergio
Ocón, P.
Rodríguez Marrero, José Luis
author_role author
author2 Fajardo, Sergio
Ocón, P.
Rodríguez Marrero, José Luis
author2_role 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 Direct ethanol fuel cell
Oxygen reduction reaction
Reduced graphene oxide
Heteroatom-doped graphene materials, non-noble metal catalyst
topic Direct ethanol fuel cell
Oxygen reduction reaction
Reduced graphene oxide
Heteroatom-doped graphene materials, non-noble metal catalyst
description Oxygen reduction reaction (ORR) is one of the key features for the efficient functioning of several energy conversion devices such as fuel cells, appearing the necessity of development of new low-cost catalyst materials. Heteroatom-doped carbon materials have attracted attention in this field due to its physicochemical and electronic properties. In this work, a nitrogen and sulfur doped material with anchored Co3O4 nanoparticles (Co/SN-rGO) is proposed as cathode catalyst for direct ethanol fuel cells (DEFCs) and results are compared with different doped graphene nanomaterials (GMs). The effect of the heteroatoms and cobalt oxide nanoparticles in the final efficiency was studied. Synthesized materials were characterized and the activity of Co/SN-rGO and GMs for the ORR was studied. Co/SN-rGO presents high ORR performance in terms of onset potential (Eonset), 0.86 V (vs RHE) and half-wave potential (E1/2) 0.72 V (vs RHE). Tafel analysis shows 60 mV dec-1 at low overpotential for potential dependent ORR mechanism. Besides, when Co/SN-rGO performance is evaluated in a DEFC using a fuel cell test station, main results indicate higher catalytic activity, stability, and ethanol tolerance of Co/SN-rGO in comparison to a carbon-supported Pt catalyst.
publishDate 2023
dc.date.none.fl_str_mv 2023
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/915/41990
url http://riull.ull.es/xmlui/handle/915/41990
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Chemical Engineering Journal 461 (2023) 142053
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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