Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells
7 figuras, 3 tablas.-- © 2012. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
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| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2012 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/250284 |
| Acesso em linha: | http://hdl.handle.net/10261/250284 |
| Access Level: | acceso abierto |
| Palavra-chave: | Pt-Ru electrocatalyst Mesoporous carbon (CMK-3) Oxygenated groups TiO2 Methanol oxidation DMFC |
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Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cellsSalgado, José R. C.Paganin, V. A.González, Ernesto RafaelMontemor, FátimaTacchini, IgnacioAnsón-Casaos, AlejandroSalvador, María A.Ferreira, PaulaFigueiredo, Filipe L.Ferreira, Mario G. S.Pt-Ru electrocatalystMesoporous carbon (CMK-3)Oxygenated groupsTiO2Methanol oxidationDMFC7 figuras, 3 tablas.-- © 2012. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/The paper addresses the effect of the carbon support on the microstructure and performance of Pt–Ru-based anodes for direct methanol fuel cells (DMFC), based on the study of four electrodes with a carbon black functionalized with HNO3, a mesoporous carbon (CMK-3), a physical mixture of TiO2 and carbon black and a reference carbon thermally treated in helium atmosphere (HeTT). It is shown that CMK-3 hinders the growth of the electrocatalyst nanoparticles (2.7 nm) and improves their distribution on the support surface, whereas the oxidized surfaces of HNO3 carbon and TiO2+carbon lead to larger (4–4.5 nm), agglomerated particles, and the lowest electrochemical active areas (54 and 26 m2 g−1, in contrast with 90 m2 g−1 for CMK-3), as determined from CO stripping experiments. However, HNO3 and TiO2 are characterized by the lowest CO oxidation potential (0.4 V vs. RHE), thus suggesting higher CO tolerance for the se electrodes. Tests in DMFC configuration show that the three modified electrodes have clearly better performance than the reference HeTT. The highest power density attained with electrodes supported on carbon treated with HNO3 (65 mW cm−2/300 mA cm−2 at 90 °C) and the equally interesting performance of the TiO2-based electrodes (53 mW cm−2/300 mA cm−2), is a strong indication of the positive effect of the presence of oxygenated groups on the methanol oxidation reaction. The results are interpreted in order to identify separate microstructural (electrocatalyst particle size, porosity) and compositional (oxygenated surface groups, presence of oxide phase) effects on the electrode performance.J.R.C. Salgado acknowledges the financial support of Portuguese Foundation for Science and Technology (FCT, Science 2008) which has also partly funded this work through project HyPEM (FCT/FEDER/QREN-COMPETE PTDC/CTM-CER/109843/2009). J.R.C. Salgado and M.F. Montemor acknowledge the European Institute of Innovation and Technology, and the KIC InnoEnergy NewMat project.ElsevierFundação para a Ciência e a Tecnologia (Portugal)European CommissionEuropean Institute of Innovation and TechnologySalgado, José R. C. [0000-0003-1011-6245]Paganin, V. A. [0000-0001-5824-2545]Montemor, Fátima [0000-0001-7835-6814]Tacchini, Ignacio [0000-0002-6748-5570]Ansón Casaos, Alejandro [0000-0002-3134-8566]Salvador, María A. [0000-0001-9362-0660]Ferreira, Paula [0000-0002-6578-8164]Figueiredo, Filipe L. [0000-0001-7799-2608]Ferreira, Mario G. S. [0000-0002-2071-9851]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120122021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/250284reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.ijhydene.2012.10.079Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2502842026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells |
| title |
Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells |
| spellingShingle |
Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells Salgado, José R. C. Pt-Ru electrocatalyst Mesoporous carbon (CMK-3) Oxygenated groups TiO2 Methanol oxidation DMFC |
| title_short |
Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells |
| title_full |
Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells |
| title_fullStr |
Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells |
| title_full_unstemmed |
Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells |
| title_sort |
Characterization and performance evaluation of Pt-Ru electrocatalysts supported on different carbon materials for direct methanol fuel cells |
| dc.creator.none.fl_str_mv |
Salgado, José R. C. Paganin, V. A. González, Ernesto Rafael Montemor, Fátima Tacchini, Ignacio Ansón-Casaos, Alejandro Salvador, María A. Ferreira, Paula Figueiredo, Filipe L. Ferreira, Mario G. S. |
| author |
Salgado, José R. C. |
| author_facet |
Salgado, José R. C. Paganin, V. A. González, Ernesto Rafael Montemor, Fátima Tacchini, Ignacio Ansón-Casaos, Alejandro Salvador, María A. Ferreira, Paula Figueiredo, Filipe L. Ferreira, Mario G. S. |
| author_role |
author |
| author2 |
Paganin, V. A. González, Ernesto Rafael Montemor, Fátima Tacchini, Ignacio Ansón-Casaos, Alejandro Salvador, María A. Ferreira, Paula Figueiredo, Filipe L. Ferreira, Mario G. S. |
| author2_role |
author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Fundação para a Ciência e a Tecnologia (Portugal) European Commission European Institute of Innovation and Technology Salgado, José R. C. [0000-0003-1011-6245] Paganin, V. A. [0000-0001-5824-2545] Montemor, Fátima [0000-0001-7835-6814] Tacchini, Ignacio [0000-0002-6748-5570] Ansón Casaos, Alejandro [0000-0002-3134-8566] Salvador, María A. [0000-0001-9362-0660] Ferreira, Paula [0000-0002-6578-8164] Figueiredo, Filipe L. [0000-0001-7799-2608] Ferreira, Mario G. S. [0000-0002-2071-9851] Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Pt-Ru electrocatalyst Mesoporous carbon (CMK-3) Oxygenated groups TiO2 Methanol oxidation DMFC |
| topic |
Pt-Ru electrocatalyst Mesoporous carbon (CMK-3) Oxygenated groups TiO2 Methanol oxidation DMFC |
| description |
7 figuras, 3 tablas.-- © 2012. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| publishDate |
2012 |
| dc.date.none.fl_str_mv |
2012 2021 2021 2021 |
| 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/10261/250284 |
| url |
http://hdl.handle.net/10261/250284 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
http://dx.doi.org/10.1016/j.ijhydene.2012.10.079 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) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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15,812429 |