The permeability of O in dense membranes of Sr0.7La0.3CoO3 was studied, at temperatures of between 750 and 1100C, under various O partial pressure gradients. The results indicated that, for thicknesses of 0.057 to 0.215cm, the O flux was controlled mainly by bulk diffusion across the membrane. The activation energy for this process was estimated to be 60kJ/mol. The ionic conductivity was equal to 0.5S/cm at 1000C.

C.H.Chen, H.J.M.Bouwmeester, R.H.E.Van Doorn, H.Kruidhof, A.J.Burggraaf: Solid State Ionics, 1997, 98[1-2], 7-13