Modelling of Mixed Ionic-Electronic Conducting Samarium-Doped Ceria Dual-Phase Oxygen Permeable Membranes

Mixed ionic-electronic conducting (MIEC) oxygen permeable membranes provide an attractive way to separate oxygen from air at 700 °C and above. Dual-phase MIEC membranes, which combine an oxygen ionic conducting fluorite phase and an MIEC perovskite phase, possess higher CO2 resistances relative to single-phase membranes and are more suited for integration in oxyfuel combustion, in line with the present drive to counter the effects of global warming. This thesis focuses on the modelling of oxygen permeation fluxes through samarium-doped ceria dual-phase membranes to provide insights on their oxygen permeation behaviour and guide future MIEC membrane design.