Asymmetric dual-phase membranes prepared via tape-casting and co-lamination for oxygen permeation

Asymmetric dual-phase membranes with a composition of 75 wt% Ce0.85Sm0.15O2−δ-25 wt% Sm0.6Sr0.4Al0.3Fe0.7O3−δ (SDC-SSAF) were prepared by tape-casting and co-lamination technique. The membrane has a thin dense layer of ~40 μm and a porous support of ~460 μm. It demonstrated an oxygen permeation flux as high as 3.9 mL cm−2 min−1 at 950 °C. This high value is commercially attractive for pure oxygen production via asymmetric dual-phase membranes.