Searching for suitable catalysts for a passive direct methanol fuel cell cathode

Trimetallic PtMRu/C cathode catalysts with M ¼ Co or Fe obtained by an impregnation procedure using ethylene glycol and NaBH4 as reducing agent, with suitable activity for the oxygen reduction reaction (ORR) and improved tolerance to methanol, have been physically characterized by HRTEM, EDS and XPS...

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Autores principales: Asteazaran, Mariano, Cespedes, German, Moreno, Mario, Bengio, Silvina, Castro Luna, Ana
Formato: Artículo publishedVersion
Lenguaje:Inglés
Inglés
Publicado: Elsevier 2017
Materias:
ORR; methanol crossover; methanol-tolerant catalyst; passive direct methanol fuel cells; accelerated stress test; trimetallic catalysts
Acceso en línea:http://hdl.handle.net/20.500.12272/2624
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2624
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; methanol crossover; methanol-tolerant catalyst; passive direct methanol fuel cells; accelerated stress test; trimetallic catalysts
spellingShingle ORR; methanol crossover; methanol-tolerant catalyst; passive direct methanol fuel cells; accelerated stress test; trimetallic catalysts
Asteazaran, Mariano
Cespedes, German
Moreno, Mario
Bengio, Silvina
Castro Luna, Ana
Searching for suitable catalysts for a passive direct methanol fuel cell cathode
topic_facet ORR; methanol crossover; methanol-tolerant catalyst; passive direct methanol fuel cells; accelerated stress test; trimetallic catalysts
description Trimetallic PtMRu/C cathode catalysts with M ¼ Co or Fe obtained by an impregnation procedure using ethylene glycol and NaBH4 as reducing agent, with suitable activity for the oxygen reduction reaction (ORR) and improved tolerance to methanol, have been physically characterized by HRTEM, EDS and XPS. The examined nanoparticles have a small particle size and are well spread on the carbon support. Pt is mainly found as Pt(0) and Co, Fe and Ru are mostly oxidized. To study their durability and performance for ORR and methanol tolerance over time, the catalysts were subjected to an electrochemical accelerated stress test (AST), consisting in cycling the potential 2000 times. Polarization curves for ORR with and without methanol were recorded. After the AST the trimetallic PtMRu/C catalysts are able to keep their performance for ORR in the presence of methanol.
format Artículo
publishedVersion
Artículo
author Asteazaran, Mariano
Cespedes, German
Moreno, Mario
Bengio, Silvina
Castro Luna, Ana
author_facet Asteazaran, Mariano
Cespedes, German
Moreno, Mario
Bengio, Silvina
Castro Luna, Ana
author_sort Asteazaran, Mariano
title Searching for suitable catalysts for a passive direct methanol fuel cell cathode
title_short Searching for suitable catalysts for a passive direct methanol fuel cell cathode
title_full Searching for suitable catalysts for a passive direct methanol fuel cell cathode
title_fullStr Searching for suitable catalysts for a passive direct methanol fuel cell cathode
title_full_unstemmed Searching for suitable catalysts for a passive direct methanol fuel cell cathode
title_sort searching for suitable catalysts for a passive direct methanol fuel cell cathode
publisher Elsevier
publishDate 2017
url http://hdl.handle.net/20.500.12272/2624
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AT morenomario searchingforsuitablecatalystsforapassivedirectmethanolfuelcellcathode
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