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Long-term hydrogen oxidation catalysts in alkaline fuel cells
KTH, Superseded Departments, Chemical Engineering and Technology.ORCID iD: 0000-0002-6212-4194
2000 (English)In: Journal of Power Sources, ISSN 0378-7753, Vol. 87, no 02-jan, 101-105 p.Article in journal (Refereed) Published
Abstract [en]

Pt/Pd bimetallic combination and Raney Ni catalysts were employed in long-term electrochemical assessment of the hydrogen oxidation reaction (HOR) in 6 M KOH. Steady-state current vs. potential measurements of the gas diffusion electrodes have shown high activity for these types of catalysts. Durability tests of the electrodes have shown increased stability for the Pt/Pd-based catalysts than the Raney Ni at a constant load of 100 mA/cm(2) and at temperatures of 55 degrees C and 60 degrees C, respectively. Surface, structural and chemical analyses by BET surface area, transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) were used to characterize the composite electrode/catalyst both before and after the electrochemical testing.

Place, publisher, year, edition, pages
2000. Vol. 87, no 02-jan, 101-105 p.
Keyword [en]
hydrogen oxidation, platinum, palladium, bimetal, Raney Ni, alkaline fuel cell, raney-nickel catalyst, oxygen-reduction, phosphoric-acid, electrodes, carbon, co
URN: urn:nbn:se:kth:diva-19680ISI: 000086468600013OAI: diva2:338372
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Kiros, Yohannes
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