Mixed electronic-oxide ionic conductor of Fe-doped La(Sr)GaO3 perovskite oxide for oxygen permeating membrane

Tsuruta Y; Todaka T; Nisiguchi H; Ishihara T; Takita Y

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Electrochemical and Solid State Letters, Vol.4, No.3, E13-E15, 2001

Mixed electronic-oxide ionic conductor of Fe-doped La(Sr)GaO3 perovskite oxide for oxygen permeating membrane

Tsuruta Y, Todaka T, Nisiguchi H, Ishihara T, Takita Y

Oxygen permeating property of Fe doped LaGaO3 based perovskite oxide was investigated in this study. Fe doped La1-xSrxGaO3 exhibits high total conductivity (similar to 10(3) S/cm) and high oxygen permeation rate. In particular, the highest total conductivity and oxygen permeating rate were attained at La0.7Sr0.3Ga0.6Fe0.4O3. At this composition, oxygen permeation rate from air to He was as high as 2.5 cm(-2)/min . cm(-2) at 1273 K and 0.3 mm membrane thickness.