Advanced XAS Analysis for Investigating Fuel Cell Electrocatalysts
- Department of Physics, University of Camerino, (Italy)
- Department of Physics, University of Camerino (Italy)
- Chemistry Department, University of Camerino (Italy)
In the paper we present an accurate structural study of a Pt-based electrode by means of XAS, accounting for both the catalytic nanoparticles size distribution and sample inhomogeneities. Morphology and size distribution of the nanoparticles were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction techniques. XAS data-analysis was performed using advanced multiple-scattering techniques (GNXAS), disentangling possible effects due to surface atom contributions in nanoparticles and sample homogeneity, contributing to a reduction of intensity of the structural signal. This approach for XAS investigation of electrodes of FC devices can represent a viable and reliable way to understand structural details, important for producing more efficient catalytic materials.
- OSTI ID:
- 21054719
- Journal Information:
- AIP Conference Proceedings, Vol. 882, Issue 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644632; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION SPECTROSCOPY
DATA ANALYSIS
ELECTROCATALYSTS
ELECTROCHEMISTRY
ELECTRODES
MORPHOLOGY
MULTIPLE SCATTERING
NANOSTRUCTURES
PARTICLE SIZE
PARTICLES
PLATINUM
PROTON EXCHANGE MEMBRANE FUEL CELLS
REDUCTION
SCANNING ELECTRON MICROSCOPY
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY SPECTRA
X-RAY SPECTROSCOPY