Determination of Diffusion Coefficients of Oxygen Vacancies in La0.58Sr0.4Co0.2Fe0.8O3-δ Perovskite Type Oxides
One possibility to run a zero CO2-emission power plant is the oxyfuel combustion process. An efficient technology to separate oxygen from air are processes with oxygen transport membranes. It is important that these membranes have a high permeability additional to high chemical stability under power plant conditions. La0.58Sr0.4Co0.2Fe0.8O3- (LSCF) is a mixed ionic electronic conducting material (MIEC) which is considered to have good permeation properties and a high stability. In this work LSCF based membranes are investigated. Data from a TGA (Thermo-Gravimetric Analyser) have been used to determine the diffusion coefficient of oxygen vacancies in LSCF perovskite type oxides for different temperatures.
A. Agüero, J.M. Albella, M.P. Hierro, J. Phillibert and F.J. Pérez Trujillo
D. Schlehuber et al., "Determination of Diffusion Coefficients of Oxygen Vacancies in La0.58Sr0.4Co0.2Fe0.8O3-δ Perovskite Type Oxides", Defect and Diffusion Forum, Vols. 289-292, pp. 551-554, 2009