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dc.creatorAsteazaran, Mariano
dc.creatorBengio, Silvina
dc.creatorTriaca, Walter
dc.creatorCastro Luna, Ana
dc.date.accessioned2017-12-28T18:41:04Z
dc.date.available2017-12-28T18:41:04Z
dc.date.issued2015
dc.identifier.citationJournal of Applied Electrochemistryes_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12272/2630
dc.description.abstractDirect methanol fuel cells (DMFCs) represent an interesting alternative in obtaining electricity in a clean and efficient way. Portable power sources are one of the most promising applications of passive DMFCs. One of the requirements in these devices is to use high alcohol concentration, which due to methanol crossover causes a considerable loss of fuel cell efficiency. In order to develop methanol tolerant cathodes with suitable activity, different supported catalysts namely PtCo/C and PtCoRu/C, were prepared either via ethylene glycol reduction (EG) with or without microwave heating assistance (MW) or via the alloy method, the latter followed by a thermal treatment in a reducing atmosphere (N2/H2). All cathode-catalysts were tested to determine the role of the components in simultaneously enhancing the oxygen reduction reaction (ORR) and discouraging the methanol oxidation reaction. According to the synthesis methodology, X-ray photoelectron spectra showed that the amount of metal oxides on the surface varies, being higher on the PtCo/C EG and PtCoRu/C EG catalysts. The electrochemical characterization of the catalysts was accomplished in a three electrodes electrochemical cell with a glassy carbon rotating disk electrode covered with a thin catalytic film as working electrode. To study the ORR and the influence of different methanol concentrations, linear sweep voltammetry and cyclic voltammetry were employed. The PtCo/C EG, with an important metal oxide amount on the surface, and the PtCoRu/C MW and EG electrodes, both with RuO2 on their surfaces, were the most tolerant to methanol presence.es_ES
dc.formatapplication/pdf
dc.language.isoenges_ES
dc.publisherSpringeres_ES
dc.relationhttps://link.springer.com/article/10.1007/s10800-014-0748-1es_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectORR; PtCo/C; PtCoRu/C; Methanol crossover; DMFC; Methanol-tolerant cathode catalystses_ES
dc.titleMethanol tolerant electrocatalysts for the oxygen reduction reactiones_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.description.affiliationFil: Asteazaran, Mariano. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales). UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentinaes_ES
dc.description.affiliationFil: Bengio, Silvina. CAB CNEA (Centro Atómico Bariloche, Comisión Nacional de Energía Atómica). CONICET; Argentinaes_ES
dc.description.affiliationFil: Triaca, Walter. UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentinaes_ES
dc.description.affiliationFil: Castro Luna, Ana. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales). UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentinaes_ES
dc.description.peerreviewedPeer Reviewedes_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES
dc.type.snrdinfo:ar-repo/semantics/artículoes_ES
dc.rights.useAtribución (Attribution): En cualquier explotación de la obra autorizada por la licencia será necesario reconocer la autoría (obligatoria en todos los casos). No comercial (Non Commercial): La explotación de la obra queda limitada a usos no comerciales. Sin obras derivadas (No Derivate Works): La autorización para explotar la obra no incluye la posibilidad de crear una obra derivada (traducciones, adaptaciones, etc.).es_ES
dc.identifier.doi10.1007/s10800-014-0748-1


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