Applications of coulometric titration for studies of oxygen non-stoichiometry in oxides

Abstract

This article gives a brief overview of the modern methods for in situ studying of oxygen non-stoichiometry in oxides. The emphasis is on the techniques that are based on the use of transport properties of solid electrolytes with unipolar oxygen ion conductivity, as well as on the experimental implementation of coulometric titration. The possible sources of experimental errors are considered, and methods are discussed of their accounting and minimization. Several examples are given of the using of the data on non-stoichiometry for the determination of thermodynamic properties and defect structure in oxides.