Determination of thermodynamic and transport properties of non-stoichiometric oxides

Fabrice Mauvy (1) , Jacques Fouletier (2)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 LEPMI - Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces

The purpose of this chapter is to describe methods for determining the oxygen stoichiometry (bulk and surface oxygen activities) and transport properties in non-stoichiometric oxides using solid electrolyte cells. These oxides are generally referred to as “mixed ionic-electronic conductors” (MIEC). It is customary to consider that in a MIEC, the ionic or electronic transport number is higher than 0.01 and that the total electrical conductivity is sufficiently high, i.e., higher than 10-5 S.cm-1. Emphasis will be given on sources of error.

Domaines: Matériaux

Fabrice Mauvy, Jacques Fouletier. Determination of thermodynamic and transport properties of non-stoichiometric oxides. Alessio Innocenti; Norlida Kamarulzaman. Stoichiometry and Materials Science - When Numbers Matter, InTech, pp.175-202, 2012, 978-953-51-0512-1. ⟨10.5772/47935⟩. ⟨hal-04161748⟩