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Titel:
CO tolerance of Pd rich platinum palladium carbon supported electrocatalysts for PEMFC applications
 
Auteur(s):
 
Gepubliceerd door: Publicatie datum:
ECN SF 1-8-2002
 
ECN publicatienummer: Publicatie type:
ECN-RX--02-028 Artikel wetenschap tijdschrift
 
Aantal pagina's:
22  

Gepubliceerd in: Submitted for publication in: Journal of the Electrochemical Society. (), , , Vol., p.-.

Samenvatting:
The potential use of carbon supported PtPdy (y=1-6) electrocatalystsas CO tolerant anodes for proton exchange membrane fuel cell (PEMFC) applications has been investigated in the present study. Cyclic voltammetry experiments at 80┬░C, the operating temperature of the PEMFC, reveal that upon CO saturation, a lower fraction of surface sites are poisoned in the case of PtPdy compared to Pt, resulting in higher amounts of adsorbed hydrogen. Fuel cell tests demonstrated that the need of reasonable hydrogen oxidation currents with and without CO necessitates the presence of Pt in the catalyst. As a CO tolerant PEMFC anode catalyst, PtPdy attains improved performance compared to both Pt and PtRu.


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