Publicação
Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells
| Resumo: | Pt-Ru electrocatalysts supported on carbon xerogels and ordered mesoporous carbons were synthesized by reduction with formate ions (SFM method). Chemical and heat treatments were applied to modified the surface chemistry of original carbon supports. Physical characterization of the catalysts was performed using X-ray dispersive energy (EDX) and X-ray diffraction (XRD) techniques, while the electrochemical activity towards methanol oxidation was studied by cyclic voltammetry (CV). Pt-Ru catalysts with nominal metal content (20 wt.%) and atomic ratios (Pt:Ru 1:1) were successfully synthesized on the different supports. Higher methanol oxidation current densities were obtained for those supports with a higher content of surface oxygen groups. Gas diffusion electrode and membrane-electrode-assembly preparation allowed an in-house built of a direct methanol fuel monocell for the evaluation of the catalysts performance. Polarization curves were measured confirming the results obtained in a three electrodes electrochemical cell by CV. Normalized power curves per weight of Pt are discussed in terms of the significant impact on noble metal loading and attained cell maximum power, in comparison with results obtained with a commercial catalyst |
|---|---|
| Autores principais: | Calderon, J. C. |
| Outros Autores: | Figueiredo, J. L.; Mahata, N.; Pereira, M. F. R.; Fernandes, Vitor; Rangel, C. M.; Calvillo, L.; Lázaro, M. J.; Pastor, E. |
| Assunto: | Carbon xerogels CMK-3 ordered mesoporous carbons Pt-Ru electrocatalysts Polymer electrolyte membrane Fuel cells |
| Ano: | 2011 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Laboratório Nacional de Energia e Geologia, I.P. |
| Idioma: | inglês |
| Origem: | Repositório do LNEG |
| _version_ | 1877768027306459136 |
|---|---|
| author | Calderon, J. C. |
| author2 | Figueiredo, J. L. Mahata, N. Pereira, M. F. R. Fernandes, Vitor Rangel, C. M. Calvillo, L. Lázaro, M. J. Pastor, E. |
| author2_role | author author author author author author author author |
| author_facet | Calderon, J. C. Figueiredo, J. L. Mahata, N. Pereira, M. F. R. Fernandes, Vitor Rangel, C. M. Calvillo, L. Lázaro, M. J. Pastor, E. |
| author_role | author |
| contributor_name_str_mv | Repositório do LNEG |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Calderon, J. C.\"},{\"Person.name\":\"Figueiredo, J. L.\"},{\"Person.name\":\"Mahata, N.\"},{\"Person.name\":\"Pereira, M. F. R.\"},{\"Person.name\":\"Fernandes, Vitor\",\"Person.identifier.orcid\":\"0000-0002-3947-0275\",\"Person.identifier.scopusAuthorID\":\"23970056400\"},{\"Person.name\":\"Rangel, C. M.\",\"Person.identifier.cienciaID\":\"AA13-FF7C-9E29\",\"Person.identifier.orcid\":\"0000-0001-7996-8142\",\"Person.identifier.researcherID\":\"D-5477-2011\",\"Person.identifier.scopusAuthorID\":\"7006108156\"},{\"Person.name\":\"Calvillo, L.\"},{\"Person.name\":\"Lázaro, M. J.\"},{\"Person.name\":\"Pastor, E.\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Repositório do LNEG |
| datacite.creators.creator.creatorName.fl_str_mv | Calderon, J. C. Figueiredo, J. L. Mahata, N. Pereira, M. F. R. Fernandes, Vitor Rangel, C. M. Calvillo, L. Lázaro, M. J. Pastor, E. |
| datacite.date.Accepted.fl_str_mv | 2011-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2012-02-01T14:57:31Z |
| datacite.date.embargoed.fl_str_mv | 2012-02-01T14:57:31Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Carbon xerogels CMK-3 ordered mesoporous carbons Pt-Ru electrocatalysts Polymer electrolyte membrane Fuel cells |
| datacite.titles.title.fl_str_mv | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells |
| dc.contributor.none.fl_str_mv | Repositório do LNEG |
| dc.creator.none.fl_str_mv | Calderon, J. C. Figueiredo, J. L. Mahata, N. Pereira, M. F. R. Fernandes, Vitor Rangel, C. M. Calvillo, L. Lázaro, M. J. Pastor, E. |
| dc.date.Accepted.fl_str_mv | 2011-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2012-02-01T14:57:31Z |
| dc.date.embargoed.fl_str_mv | 2012-02-01T14:57:31Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.9/1422 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Carbon xerogels CMK-3 ordered mesoporous carbons Pt-Ru electrocatalysts Polymer electrolyte membrane Fuel cells |
| dc.title.fl_str_mv | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Pt-Ru electrocatalysts supported on carbon xerogels and ordered mesoporous carbons were synthesized by reduction with formate ions (SFM method). Chemical and heat treatments were applied to modified the surface chemistry of original carbon supports. Physical characterization of the catalysts was performed using X-ray dispersive energy (EDX) and X-ray diffraction (XRD) techniques, while the electrochemical activity towards methanol oxidation was studied by cyclic voltammetry (CV). Pt-Ru catalysts with nominal metal content (20 wt.%) and atomic ratios (Pt:Ru 1:1) were successfully synthesized on the different supports. Higher methanol oxidation current densities were obtained for those supports with a higher content of surface oxygen groups. Gas diffusion electrode and membrane-electrode-assembly preparation allowed an in-house built of a direct methanol fuel monocell for the evaluation of the catalysts performance. Polarization curves were measured confirming the results obtained in a three electrodes electrochemical cell by CV. Normalized power curves per weight of Pt are discussed in terms of the significant impact on noble metal loading and attained cell maximum power, in comparison with results obtained with a commercial catalyst |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorio.lneg.pt/bitstreams/8307fe53-95e7-46cc-9953-f89aa45b66a1/download |
| id | rlneg_d5ce1cd4454804ee07a710dde5dc7b67 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.9/1422 |
| inst_facet_str | urn:organizationAcronym:rlneg{{{_:::_}}}Laboratório Nacional de Energia e Geologia, I.P. |
| instacron_str | rlneg |
| institution | Laboratório Nacional de Energia e Geologia, I.P. |
| instname_str | Laboratório Nacional de Energia e Geologia, I.P. |
| language | eng |
| network_acronym_str | rlneg |
| network_name_str | Repositório do LNEG |
| oai_identifier_str | oai:repositorio.lneg.pt:10400.9/1422 |
| organization_str_mv | urn:organizationAcronym:rlneg |
| person_str_mv | Calderon, J. C. Figueiredo, J. L. Mahata, N. Pereira, M. F. R. Fernandes, Vitor Fernandes, Vitor http://orcid.org/0000-0002-3947-0275 0000-0002-3947-0275 Rangel, C. M. Rangel, C. M. https://www.ciencia-id.pt/AA13-FF7C-9E29 AA13-FF7C-9E29 http://orcid.org/0000-0001-7996-8142 0000-0001-7996-8142 Calvillo, L. Lázaro, M. J. Pastor, E. |
| publishDate | 2011 |
| repo_facet_str | urn:repositoryAcronym:rlneg{{{_:::_}}}Repositório do LNEG |
| reponame_str | Repositório do LNEG |
| repository_id_str | urn:repositoryAcronym:rlneg |
| service_str_mv | urn:repositoryAcronym:rlneg |
| spelling | engporPt-Ru electrocatalysts supported on carbon xerogels and ordered mesoporous carbons were synthesized by reduction with formate ions (SFM method). Chemical and heat treatments were applied to modified the surface chemistry of original carbon supports. Physical characterization of the catalysts was performed using X-ray dispersive energy (EDX) and X-ray diffraction (XRD) techniques, while the electrochemical activity towards methanol oxidation was studied by cyclic voltammetry (CV). Pt-Ru catalysts with nominal metal content (20 wt.%) and atomic ratios (Pt:Ru 1:1) were successfully synthesized on the different supports. Higher methanol oxidation current densities were obtained for those supports with a higher content of surface oxygen groups. Gas diffusion electrode and membrane-electrode-assembly preparation allowed an in-house built of a direct methanol fuel monocell for the evaluation of the catalysts performance. Polarization curves were measured confirming the results obtained in a three electrodes electrochemical cell by CV. Normalized power curves per weight of Pt are discussed in terms of the significant impact on noble metal loading and attained cell maximum power, in comparison with results obtained with a commercial catalystapplication/pdfporInfluence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cellsCalderon, J. C.Figueiredo, J. L.Mahata, N.Pereira, M. F. R.PersonalFernandes, VitorDSpacehttp://dspace.org/items/cb2b5b48-8c88-4f34-ac87-c5f2558ec151DSpacehttp://dspace.org/items/cb2b5b48-8c88-4f34-ac87-c5f2558ec151FernandesVitorORCIDhttp://orcid.org0000-0002-3947-0275Scopus Author IDhttps://www.scopus.com23970056400PersonalRangel, C. M.DSpacehttp://dspace.org/items/804e595a-d539-46a2-ae78-6cadc8ca9457DSpacehttp://dspace.org/items/804e595a-d539-46a2-ae78-6cadc8ca9457RangelCarmen M.Ciência IDhttps://www.ciencia-id.ptAA13-FF7C-9E29ORCIDhttp://orcid.org0000-0001-7996-8142Researcher IDhttps://www.researcherid.comD-5477-2011Scopus Author IDhttps://www.scopus.com7006108156Calvillo, L.Lázaro, M. J.Pastor, E.HostingInstitutionOrganizationalRepositório do LNEGe-mailmailto:repositorio@lneg.ptrepositorio@lneg.pt2012-02-01T14:57:31Z20112011-01-01T00:00:00ZHandlehttp://hdl.handle.net/10400.9/1422http://purl.org/coar/access_right/c_abf2open accessCarbon xerogelsCMK-3 ordered mesoporous carbonsPt-Ru electrocatalystsPolymer electrolyte membraneFuel cells514814 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorio.lneg.pt/bitstreams/8307fe53-95e7-46cc-9953-f89aa45b66a1/downloadCiência e Tecnologia dos Materiais1219 |
| spellingShingle | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells Calderon, J. C. Carbon xerogels CMK-3 ordered mesoporous carbons Pt-Ru electrocatalysts Polymer electrolyte membrane Fuel cells |
| status | SINGLETON |
| subject.fl_str_mv | Carbon xerogels CMK-3 ordered mesoporous carbons Pt-Ru electrocatalysts Polymer electrolyte membrane Fuel cells |
| title | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells |
| title_full | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells |
| title_fullStr | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells |
| title_full_unstemmed | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells |
| title_short | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells |
| title_sort | Influence of catalyst support characteristics and functionalization on the catalytic activity of Pt-Ru for PEM fuel cells |
| topic | Carbon xerogels CMK-3 ordered mesoporous carbons Pt-Ru electrocatalysts Polymer electrolyte membrane Fuel cells |
| topic_facet | Carbon xerogels CMK-3 ordered mesoporous carbons Pt-Ru electrocatalysts Polymer electrolyte membrane Fuel cells |
| url | http://hdl.handle.net/10400.9/1422 |
| visible | 1 |
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