A novel CO2-stable dual phase membrane with high oxygen permeabilityElectronic supplementary information (ESI) available: Experimental details. See DOI: 10.1039/c3cc47962e

By cobalt-doping of the mixed conducting phase PSFC, a good combination of high CO 2 stability and high oxygen permeability is obtained for the 60 wt% Ce 0.9 Pr 0.1 O 2− δ -40 wt% Pr 0.6 Sr 0.4 Fe 0.5 Co 0.5 O 3− δ (CP-PSFC) dual phase membrane, which suggests that CP-PSFC is a promising membrane for industrial applications in the oxyfuel process for CO 2 capture. A good combination of high CO 2 stability and high oxygen permeability is obtained for the novel CP-PSFC dual phase membrane.