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Titolo:
CARBON-MONOXIDE POISONING OF PLATINUM-GRAPHITE CATALYSTS FOR POLYMER ELECTROLYTE FUEL-CELLS - COMPARISON BETWEEN PLATINUM-SUPPORTED ON GRAPHITE AND INTERCALATED IN GRAPHITE
Autore:
TILQUIN JY; COTE R; GUAY D; DODELET JP; DENES G;
Indirizzi:
INRS ENERGIE,CP 1020 VARENNES PQ J3X 1S2 CANADA CONCORDIA UNIV,DEPT CHEM MONTREAL PQ H3G 1M8 CANADA
Titolo Testata:
Journal of power sources
fascicolo: 1-2, volume: 61, anno: 1996,
pagine: 193 - 200
SICI:
0378-7753(1996)61:1-2<193:CPOPCF>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-INDEX PLATINUM; PT-RU ALLOYS; ELECTROCHEMICAL OXIDATION; CHEMICAL-REDUCTION; CO; ELECTROOXIDATION; ADSORPTION; HYDROGEN; BEHAVIOR; COPPER;
Keywords:
CARBON MONOXIDE POISONING; PLATINUM; POLYMER ELECTROLYTE FUEL CELLS; GRAPHITE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
J.Y. Tilquin et al., "CARBON-MONOXIDE POISONING OF PLATINUM-GRAPHITE CATALYSTS FOR POLYMER ELECTROLYTE FUEL-CELLS - COMPARISON BETWEEN PLATINUM-SUPPORTED ON GRAPHITE AND INTERCALATED IN GRAPHITE", Journal of power sources, 61(1-2), 1996, pp. 193-200

Abstract

Platinum intercalated in graphite and Pt supported on graphite have been synthesized as catalysts for polymer electrolyte fuel cells in order to test the effect of carbon monoxide adsorption on their electrochemical properties. These materials have been characterized by X-ray diffraction, scanning electron microscopy, neutron activation analysis and cyclic voltammetry in Nafion-based films in contact with H2SO4 solution at pH 0.5. Pt intercalates are indeed tridimensional Pt cluster inclusions in a perturbed graphite matrix. Hydrogen electrosorption measurements demonstrate that Pt supported on graphite has three times more active sites than Pt intercalated in graphite even if Pt loadings (16 +/- 4 Pt wt.%) and the size of Pt clusters (3.4 +/- 0.4 nm) are similar for both catalysts. Pt supported on graphite and intercalated in graphite are equally poisoned by carbon monoxide.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 09:57:26