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