Pt–Co cathode electrocatalyst behaviour viewed by in situ XAFS fuel cell measurements

The paper presents a preliminary structural investigation of the 20% Pt–Co (1:1) alloy on Vulcan XC-72 catalyst using X-ray absorption spectroscopy (XAS), transmission electron microscopy (TEM) and X-ray diffraction (XRD). XAS results have been obtained ex situ and in situ using a specially optimize...

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Bibliographic Details
Published in:Journal of power sources 2008-04, Vol.178 (2), p.603-609
Main Authors: Witkowska, Agnieszka, Dsoke, Sonia, Principi, Emiliano, Marassi, Roberto, Di Cicco, Andrea, Rossi Albertini, Valerio
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Applied sciences
Carbon
Catalysts
Condensed Matter
Diffraction
Electrocatalysts
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cell
Fuel cells
In situ X-ray absorption spectroscopy
Other
Physics
Platinum
Pt–Co catalyst
X-rays
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Summary:The paper presents a preliminary structural investigation of the 20% Pt–Co (1:1) alloy on Vulcan XC-72 catalyst using X-ray absorption spectroscopy (XAS), transmission electron microscopy (TEM) and X-ray diffraction (XRD). XAS results have been obtained ex situ and in situ using a specially optimized for XAS measurement fuel cell (down to 6 keV). The results are compared with those obtained for pure Pt catalyst on the same carbon support under the same working conditions.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2007.08.074