Research on methanol tolerant catalysts for the oxygen reduction reaction

Direct methanol fuel cells (DMFCs) generate electricity in a clean and efficient way, so they are a valuable alternative to traditional environmentally harmful technologies. Portable power sources are one of the applications of passive DMFCs. One of the requirements in these devices is the use of hi...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Asteazaran, Mariano, Cespedes, German, Bengio, Silvina, Moreno, Mario, Triaca, Walter, Castro Luna, Ana
Formato: Artículo publishedVersion
Lenguaje:Inglés
Inglés
Publicado: Springer 2017
Materias:
ORR; DMFC; methanol crossover; methanol-tolerant catalyst; trimetallic catalyst; direct methanol fuel cells
Acceso en línea:http://hdl.handle.net/20.500.12272/2627
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2627
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
Inglés
topic ORR; DMFC; methanol crossover; methanol-tolerant catalyst; trimetallic catalyst; direct methanol fuel cells
spellingShingle ORR; DMFC; methanol crossover; methanol-tolerant catalyst; trimetallic catalyst; direct methanol fuel cells
Asteazaran, Mariano
Cespedes, German
Bengio, Silvina
Moreno, Mario
Triaca, Walter
Castro Luna, Ana
Research on methanol tolerant catalysts for the oxygen reduction reaction
topic_facet ORR; DMFC; methanol crossover; methanol-tolerant catalyst; trimetallic catalyst; direct methanol fuel cells
description Direct methanol fuel cells (DMFCs) generate electricity in a clean and efficient way, so they are a valuable alternative to traditional environmentally harmful technologies. Portable power sources are one of the applications of passive DMFCs. One of the requirements in these devices is the use of high alcohol concentration. Methanol permeation across the polymer electrolyte membrane (methanol crossover) causes a loss of fuel cell efficiency as the oxygen reduction reaction (ORR) and the methanol oxidation reaction (MOR) occur simultaneously at the cathode. To develop methanol-tolerant catalysts with suitable activity, different PtM/C and PtMRu/C combinations with M = Co or Fe were prepared by a modified impregnation method. The synthesized catalysts were studied to determine the role of the components in enhancing the ORR and simultaneously discouraging the MOR. The materials were characterized by TEM, XPS and EDS. Well-distributed particles for all the catalysts were shown by TEM. XPS spectra revealed that the method produces a great amount of metallic Pt. The electrochemical characterization was carried out by linear sweep voltammetry and cyclic voltammetry, in a three-electrode electrochemical cell with a glassy carbon rotating disk electrode covered with a thin catalytic layer and a Nafion film as the working electrode. Binary and ternary catalysts have a good activity for the ORR. However, the enhanced activity of binary catalysts is lost when the ORR is studied in the presence of methanol. Ternary catalysts containing Ru showed higher methanol-tolerance, regardless of the composition.
format Artículo
publishedVersion
Artículo
author Asteazaran, Mariano
Cespedes, German
Bengio, Silvina
Moreno, Mario
Triaca, Walter
Castro Luna, Ana
author_facet Asteazaran, Mariano
Cespedes, German
Bengio, Silvina
Moreno, Mario
Triaca, Walter
Castro Luna, Ana
author_sort Asteazaran, Mariano
title Research on methanol tolerant catalysts for the oxygen reduction reaction
title_short Research on methanol tolerant catalysts for the oxygen reduction reaction
title_full Research on methanol tolerant catalysts for the oxygen reduction reaction
title_fullStr Research on methanol tolerant catalysts for the oxygen reduction reaction
title_full_unstemmed Research on methanol tolerant catalysts for the oxygen reduction reaction
title_sort research on methanol tolerant catalysts for the oxygen reduction reaction
publisher Springer
publishDate 2017
url http://hdl.handle.net/20.500.12272/2627
work_keys_str_mv AT asteazaranmariano researchonmethanoltolerantcatalystsfortheoxygenreductionreaction
AT cespedesgerman researchonmethanoltolerantcatalystsfortheoxygenreductionreaction
AT bengiosilvina researchonmethanoltolerantcatalystsfortheoxygenreductionreaction
AT morenomario researchonmethanoltolerantcatalystsfortheoxygenreductionreaction
AT triacawalter researchonmethanoltolerantcatalystsfortheoxygenreductionreaction
AT castrolunaana researchonmethanoltolerantcatalystsfortheoxygenreductionreaction
bdutipo_str Repositorios
_version_ 1764820552533409792

Ejemplares similares