Hydrogen evolution on nanostructured Ni-Cu foams

Detalhes bibliográficos
Autor(a) principal: Cardoso, D. S. P.
Data de Publicação: 2015
Outros Autores: Eugénio, S., Silva, Maria Teresa Oliveira de Moura e, Santos, D. M. F., Sequeira, C. A. C., Montemor, M. F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/6054
Resumo: Three-dimensional (3D) nickel-copper (Ni-Cu) nanostructured foams were prepared by galvanostatic electrodeposition, on stainless steel substrates, using the dynamic hydrogen bubble template. These foams were tested as electrodes for the hydrogen evolution reaction (HER) in 8 M KOH solutions. Polarisation curves were obtained for the Ni-Cu foams and for a solid Ni electrode, in the 25-85 degrees C temperature range, and the main kinetic parameters were determined. It was observed that the 3D foams have higher catalytic activity than pure Ni. HER activation energies for the Ni-Cu foams were lower (34-36 kJ mol(-1)) than those calculated for the Ni electrode (62 kJ mol(-1)). The foams also presented high stability for HER, which makes them potentially attractive cathode materials for application in industrial alkaline electrolysers.
id RCAP_0bd2c19b5442c12ada0395947f6a7954
oai_identifier_str oai:repositorio.ipl.pt:10400.21/6054
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Hydrogen evolution on nanostructured Ni-Cu foamsAlkaline water electrolysisElectrochemical depositionNickel electrodeAlloysKineticsCoatingsCathodeMediaThree-dimensional (3D) nickel-copper (Ni-Cu) nanostructured foams were prepared by galvanostatic electrodeposition, on stainless steel substrates, using the dynamic hydrogen bubble template. These foams were tested as electrodes for the hydrogen evolution reaction (HER) in 8 M KOH solutions. Polarisation curves were obtained for the Ni-Cu foams and for a solid Ni electrode, in the 25-85 degrees C temperature range, and the main kinetic parameters were determined. It was observed that the 3D foams have higher catalytic activity than pure Ni. HER activation energies for the Ni-Cu foams were lower (34-36 kJ mol(-1)) than those calculated for the Ni electrode (62 kJ mol(-1)). The foams also presented high stability for HER, which makes them potentially attractive cathode materials for application in industrial alkaline electrolysers.ROYAL SOC CHEMISTRYRCIPLCardoso, D. S. P.Eugénio, S.Silva, Maria Teresa Oliveira de Moura eSantos, D. M. F.Sequeira, C. A. C.Montemor, M. F.2016-04-20T10:38:06Z20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/6054engCARDOSO, D. S. P.; [et al.] - Hydrogen evolution on nanostructured Ni-Cu foams. RSC Advances. ISSN. 2046-2069. Vol. 5, N.º 54 (2015), pp. 43456-43461.2046-206910.1039/c5ra06517hmetadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:50:21Zoai:repositorio.ipl.pt:10400.21/6054Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:15:15.762932Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Hydrogen evolution on nanostructured Ni-Cu foams
title Hydrogen evolution on nanostructured Ni-Cu foams
spellingShingle Hydrogen evolution on nanostructured Ni-Cu foams
Cardoso, D. S. P.
Alkaline water electrolysis
Electrochemical deposition
Nickel electrode
Alloys
Kinetics
Coatings
Cathode
Media
title_short Hydrogen evolution on nanostructured Ni-Cu foams
title_full Hydrogen evolution on nanostructured Ni-Cu foams
title_fullStr Hydrogen evolution on nanostructured Ni-Cu foams
title_full_unstemmed Hydrogen evolution on nanostructured Ni-Cu foams
title_sort Hydrogen evolution on nanostructured Ni-Cu foams
author Cardoso, D. S. P.
author_facet Cardoso, D. S. P.
Eugénio, S.
Silva, Maria Teresa Oliveira de Moura e
Santos, D. M. F.
Sequeira, C. A. C.
Montemor, M. F.
author_role author
author2 Eugénio, S.
Silva, Maria Teresa Oliveira de Moura e
Santos, D. M. F.
Sequeira, C. A. C.
Montemor, M. F.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Cardoso, D. S. P.
Eugénio, S.
Silva, Maria Teresa Oliveira de Moura e
Santos, D. M. F.
Sequeira, C. A. C.
Montemor, M. F.
dc.subject.por.fl_str_mv Alkaline water electrolysis
Electrochemical deposition
Nickel electrode
Alloys
Kinetics
Coatings
Cathode
Media
topic Alkaline water electrolysis
Electrochemical deposition
Nickel electrode
Alloys
Kinetics
Coatings
Cathode
Media
description Three-dimensional (3D) nickel-copper (Ni-Cu) nanostructured foams were prepared by galvanostatic electrodeposition, on stainless steel substrates, using the dynamic hydrogen bubble template. These foams were tested as electrodes for the hydrogen evolution reaction (HER) in 8 M KOH solutions. Polarisation curves were obtained for the Ni-Cu foams and for a solid Ni electrode, in the 25-85 degrees C temperature range, and the main kinetic parameters were determined. It was observed that the 3D foams have higher catalytic activity than pure Ni. HER activation energies for the Ni-Cu foams were lower (34-36 kJ mol(-1)) than those calculated for the Ni electrode (62 kJ mol(-1)). The foams also presented high stability for HER, which makes them potentially attractive cathode materials for application in industrial alkaline electrolysers.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
2016-04-20T10:38:06Z
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://hdl.handle.net/10400.21/6054
url http://hdl.handle.net/10400.21/6054
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv CARDOSO, D. S. P.; [et al.] - Hydrogen evolution on nanostructured Ni-Cu foams. RSC Advances. ISSN. 2046-2069. Vol. 5, N.º 54 (2015), pp. 43456-43461.
2046-2069
10.1039/c5ra06517h
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ROYAL SOC CHEMISTRY
publisher.none.fl_str_mv ROYAL SOC CHEMISTRY
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799133410894020608

Registros relacionados