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

Agnieszka Witkowska (1) , Sonia Dsoke (2) , Emiliano Principi (3) , Roberto Marassi (2) , Andrea Di Cicco (3) , Valerio Rossi Albertini (4)

1 Department of Solid State Physics, Gdansk University of Technology
2 Chemistry Department, University of Camerino
3 CNISM, CNR-INFM SOFT, Department of Physics, University of Camerino
4 ISM-CNR

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

Mots clés: In situ X-ray absorption spectroscopy; Fuel cell; Pt–Co catalyst

Domaines: Autre [cond-mat.other]

Agnieszka Witkowska, Sonia Dsoke, Emiliano Principi, Roberto Marassi, Andrea Di Cicco, et al.. Pt–Co cathode electrocatalyst behaviour viewed by in situ XAFS fuel cell measurements. Journal of Power Sources, 2008, 178, pp.603-609. ⟨10.1016/j.jpowsour.2007.08.074⟩. ⟨hal-00425567⟩