Artículo
Searching for suitable catalysts for a passive direct methanol fuel cell cathode
Asteazaran, Mariano
; Cespedes, G.; Moreno, Mario Sergio Jesus
; Bengió, Silvina
; Castro Luna Berenguer, Ana Maria del Carmen
Fecha de publicación:
12/2015
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
International Journal of Hydrogen Energy
ISSN:
0360-3199
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Trimetallic PtMRu/C cathode catalysts with M = 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.
Palabras clave:
Methanol Crossover
,
Methanol Tolerant Catalyst
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Asteazaran, Mariano; Cespedes, G.; Moreno, Mario Sergio Jesus; Bengió, Silvina; Castro Luna Berenguer, Ana Maria del Carmen; Searching for suitable catalysts for a passive direct methanol fuel cell cathode; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 40; 12-2015; 14632-14639
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