Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction

Detalhes bibliográficos
Autor(a) principal: Sakita, Alan M.P. [UNESP]
Data de Publicação: 2018
Outros Autores: Noce, Rodrigo Della, Vallés, Elisa, Benedetti, Assis V. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.apsusc.2017.11.042
http://hdl.handle.net/11449/179348
Resumo: A novel, ultra-fast, and one-step method for obtaining an effective catalyst for oxygen evolution reaction is proposed. The procedure consists in direct electrodeposition, in a free-nitrate bath, of CoFe alloy films covered with layered double hydroxides (LDH), by potentiostatic mode, in continuous or pulsed regime. The catalyst is directly formed on glassy carbon substrates. The best-prepared catalyst material reveals a mixed morphology with granular and dendritic CoFe alloy covered with a sponge of CoFe-LDH containing a Cl interlayer. An overpotential of η10 mA = 286 mV, with a Tafel slope of 48 mV dec−1, is obtained for the OER which displays the enhanced properties of the catalyst. These improved results demonstrate the competitiveness and efficacy of our proposal for the production of OER catalysts.
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spelling Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reactionCoFe alloyCoFe-layered double hydroxideOxygen evolution reactionUltra-fast electrodepositionWater splittingA novel, ultra-fast, and one-step method for obtaining an effective catalyst for oxygen evolution reaction is proposed. The procedure consists in direct electrodeposition, in a free-nitrate bath, of CoFe alloy films covered with layered double hydroxides (LDH), by potentiostatic mode, in continuous or pulsed regime. The catalyst is directly formed on glassy carbon substrates. The best-prepared catalyst material reveals a mixed morphology with granular and dendritic CoFe alloy covered with a sponge of CoFe-LDH containing a Cl interlayer. An overpotential of η10 mA = 286 mV, with a Tafel slope of 48 mV dec−1, is obtained for the OER which displays the enhanced properties of the catalyst. These improved results demonstrate the competitiveness and efficacy of our proposal for the production of OER catalysts.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Federación Española de Enfermedades RarasInstituto de Química UNESP-Universidade Estadual PaulistaGe-CPN (Thin Films and Nanostructures Electrodeposition Group) Dpt. Ciència de Materials i Química Física, Martí i Franquès 1Centro de Química Estrutural-CQE Departament of Chemical Engineering Instituto Superior Técnico Universidade de LisboaInstitute of Nanocience and Nanotechnology (IN2UB) Universitat de BarcelonaInstituto de Química UNESP-Universidade Estadual PaulistaUniversidade Estadual Paulista (Unesp)Dpt. Ciència de Materials i Química FísicaUniversidade de LisboaUniversitat de BarcelonaSakita, Alan M.P. [UNESP]Noce, Rodrigo DellaVallés, ElisaBenedetti, Assis V. [UNESP]2018-12-11T17:34:49Z2018-12-11T17:34:49Z2018-03-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1153-1160application/pdfhttp://dx.doi.org/10.1016/j.apsusc.2017.11.042Applied Surface Science, v. 434, p. 1153-1160.0169-4332http://hdl.handle.net/11449/17934810.1016/j.apsusc.2017.11.0422-s2.0-85033594964Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengApplied Surface Science1,093info:eu-repo/semantics/openAccess2023-10-11T06:05:46Zoai:repositorio.unesp.br:11449/179348Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:36:44.659249Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction
title Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction
spellingShingle Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction
Sakita, Alan M.P. [UNESP]
CoFe alloy
CoFe-layered double hydroxide
Oxygen evolution reaction
Ultra-fast electrodeposition
Water splitting
title_short Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction
title_full Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction
title_fullStr Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction
title_full_unstemmed Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction
title_sort Pulse electrodeposition of CoFe thin films covered with layered double hydroxides as a fast route to prepare enhanced catalysts for oxygen evolution reaction
author Sakita, Alan M.P. [UNESP]
author_facet Sakita, Alan M.P. [UNESP]
Noce, Rodrigo Della
Vallés, Elisa
Benedetti, Assis V. [UNESP]
author_role author
author2 Noce, Rodrigo Della
Vallés, Elisa
Benedetti, Assis V. [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Dpt. Ciència de Materials i Química Física
Universidade de Lisboa
Universitat de Barcelona
dc.contributor.author.fl_str_mv Sakita, Alan M.P. [UNESP]
Noce, Rodrigo Della
Vallés, Elisa
Benedetti, Assis V. [UNESP]
dc.subject.por.fl_str_mv CoFe alloy
CoFe-layered double hydroxide
Oxygen evolution reaction
Ultra-fast electrodeposition
Water splitting
topic CoFe alloy
CoFe-layered double hydroxide
Oxygen evolution reaction
Ultra-fast electrodeposition
Water splitting
description A novel, ultra-fast, and one-step method for obtaining an effective catalyst for oxygen evolution reaction is proposed. The procedure consists in direct electrodeposition, in a free-nitrate bath, of CoFe alloy films covered with layered double hydroxides (LDH), by potentiostatic mode, in continuous or pulsed regime. The catalyst is directly formed on glassy carbon substrates. The best-prepared catalyst material reveals a mixed morphology with granular and dendritic CoFe alloy covered with a sponge of CoFe-LDH containing a Cl interlayer. An overpotential of η10 mA = 286 mV, with a Tafel slope of 48 mV dec−1, is obtained for the OER which displays the enhanced properties of the catalyst. These improved results demonstrate the competitiveness and efficacy of our proposal for the production of OER catalysts.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-11T17:34:49Z
2018-12-11T17:34:49Z
2018-03-15
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.apsusc.2017.11.042
Applied Surface Science, v. 434, p. 1153-1160.
0169-4332
http://hdl.handle.net/11449/179348
10.1016/j.apsusc.2017.11.042
2-s2.0-85033594964
url http://dx.doi.org/10.1016/j.apsusc.2017.11.042
http://hdl.handle.net/11449/179348
identifier_str_mv Applied Surface Science, v. 434, p. 1153-1160.
0169-4332
10.1016/j.apsusc.2017.11.042
2-s2.0-85033594964
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Applied Surface Science
1,093
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1153-1160
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128387872456704

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