Oxygen isotopic exchange: A useful tool for characterizing oxygen conducting oxides

Jean-Marc. Bassat (1) , P. Petitjean (2) , Jacques Fouletier (3) , Cécile Lalanne (1) , C. Caboche (2) , Fabrice Mauvy (1) , Jean-Claude Grenier (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 LRRS - Laboratoire de Recherche sur la Réactivité des Solides
3 LEPMI - Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces

The 18O/16O isotope exchange depth profile technique (IEDP) followed by SIMS characterizations was applied to dense membranes of pure ionic conductors and mixed ionic/electronic conducting materials. It is a very useful tool since we obtain in both cases data concerning the oxygen diffusion in the bulk and the oxygen exchange at the surface of the materials. Comparisons were done, including results concerning the role of the surface with regards to the oxygen reduction reaction. Detailed experimental and analytical processes are given.

Mots clés: SOFC; Mixed conducting oxides; Oxygen transport properties; Oxygen reduction

Domaines: Matériaux

Jean-Marc. Bassat, P. Petitjean, Jacques Fouletier, Cécile Lalanne, C. Caboche, et al.. Oxygen isotopic exchange: A useful tool for characterizing oxygen conducting oxides. Applied Catalysis A : General, 2005, 289 (1), pp.84-89. ⟨10.1016/j.apcata.2005.04.054⟩. ⟨hal-00015495⟩