Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction

Iron/Nitrogen-doped carbon catalysts are considered to be one of the most promising candidates to replace platinum-based catalysts for the oxygen reduction reaction in the cathode of the fuel cell. Herein, we demonstrate a simple and cost-effective strategy for the fabrication of Fe-N-C-mesoporous-c...

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Autores: Álvarez Ferrero, Guillermo, Díez Nogués, Noel, Sevilla Solís, Marta, Fuertes Arias, Antonio Benito
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/173190
Acesso em linha:http://hdl.handle.net/10261/173190
Access Level:acceso abierto
Palavra-chave:Carbon nanomaterials
Fe-N-C catalyst
Non-noble metal catalysts
Fe-N coordination
Oxygen reduction reaction
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spelling Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reactionÁlvarez Ferrero, GuillermoDíez Nogués, NoelSevilla Solís, MartaFuertes Arias, Antonio BenitoCarbon nanomaterialsFe-N-C catalystNon-noble metal catalystsFe-N coordinationOxygen reduction reactionIron/Nitrogen-doped carbon catalysts are considered to be one of the most promising candidates to replace platinum-based catalysts for the oxygen reduction reaction in the cathode of the fuel cell. Herein, we demonstrate a simple and cost-effective strategy for the fabrication of Fe-N-C-mesoporous-carbons involving the carbonization of calcium citrate followed by a post-treatment with urea and ammonium sulfate iron (II). The synthesized materials exhibit high values of surface area, large nitrogen and iron contents. The iron is present in two configurations: i) γ-iron phase and ii) iron coordinated to nitrogen (Fe-Nx). When used as an electrocatalyst in basic electrolyte, the Fe-N-C material predominantly catalyzes the four-electron pathway with an onset potential of 0.91 V and a half-wave potential of 0.81 V. In acidic electrolyte, the optimized catalyst exhibits an onset potential of 0.73 V. The experimental results show that the N-functionalities and the Fe-N coordination sites play a major role in catalytic performance in both kinds of electrolytes and that the ɣ-iron phase has little or no catalytic effect. In this regard, pure N-doped carbon shows to be better catalyst than pure Fe-doped carbon. Hence, these results provide useful guidelines for the development of highly active and cost-effective ORR catalysts.This research work was supported by the FICYT Regional Project (GRUPIN14-102), and the Spanish MINECO-FEDER (CTQ2015-63552-R).Peer reviewedElsevierMinisterio de Economía y Competitividad (España)Principado de AsturiasÁlvarez Ferrero, Guillermo [0000-0001-8606-781X]Díez Nogués, Noel [0000-0002-6072-8947]Sevilla Solís, Marta [0000-0002-2471-2403]Fuertes Arias, Antonio Benito [0000-0002-5931-1669]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/173190reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2015-63552-Rhttps://doi.org/10.1016/j.micromeso.2018.12.008Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1731902026-05-22T06:33:51Z
dc.title.none.fl_str_mv Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction
title Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction
spellingShingle Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction
Álvarez Ferrero, Guillermo
Carbon nanomaterials
Fe-N-C catalyst
Non-noble metal catalysts
Fe-N coordination
Oxygen reduction reaction
title_short Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction
title_full Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction
title_fullStr Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction
title_full_unstemmed Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction
title_sort Iron/Nitrogen co-doped mesoporous carbon synthesized by an endo-templating approach as an efficient electrocatalyst for the oxygen reduction reaction
dc.creator.none.fl_str_mv Álvarez Ferrero, Guillermo
Díez Nogués, Noel
Sevilla Solís, Marta
Fuertes Arias, Antonio Benito
author Álvarez Ferrero, Guillermo
author_facet Álvarez Ferrero, Guillermo
Díez Nogués, Noel
Sevilla Solís, Marta
Fuertes Arias, Antonio Benito
author_role author
author2 Díez Nogués, Noel
Sevilla Solís, Marta
Fuertes Arias, Antonio Benito
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Principado de Asturias
Álvarez Ferrero, Guillermo [0000-0001-8606-781X]
Díez Nogués, Noel [0000-0002-6072-8947]
Sevilla Solís, Marta [0000-0002-2471-2403]
Fuertes Arias, Antonio Benito [0000-0002-5931-1669]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Carbon nanomaterials
Fe-N-C catalyst
Non-noble metal catalysts
Fe-N coordination
Oxygen reduction reaction
topic Carbon nanomaterials
Fe-N-C catalyst
Non-noble metal catalysts
Fe-N coordination
Oxygen reduction reaction
description Iron/Nitrogen-doped carbon catalysts are considered to be one of the most promising candidates to replace platinum-based catalysts for the oxygen reduction reaction in the cathode of the fuel cell. Herein, we demonstrate a simple and cost-effective strategy for the fabrication of Fe-N-C-mesoporous-carbons involving the carbonization of calcium citrate followed by a post-treatment with urea and ammonium sulfate iron (II). The synthesized materials exhibit high values of surface area, large nitrogen and iron contents. The iron is present in two configurations: i) γ-iron phase and ii) iron coordinated to nitrogen (Fe-Nx). When used as an electrocatalyst in basic electrolyte, the Fe-N-C material predominantly catalyzes the four-electron pathway with an onset potential of 0.91 V and a half-wave potential of 0.81 V. In acidic electrolyte, the optimized catalyst exhibits an onset potential of 0.73 V. The experimental results show that the N-functionalities and the Fe-N coordination sites play a major role in catalytic performance in both kinds of electrolytes and that the ɣ-iron phase has little or no catalytic effect. In this regard, pure N-doped carbon shows to be better catalyst than pure Fe-doped carbon. Hence, these results provide useful guidelines for the development of highly active and cost-effective ORR catalysts.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/173190
url http://hdl.handle.net/10261/173190
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2015-63552-R
https://doi.org/10.1016/j.micromeso.2018.12.008
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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