High performance oxygen permeation membrane: Sr and Ti co-doped BaFeO3-δ ceramics

Zhipeng Sun,Zilu Liu,Changkun Cai,Hong Deng,Fan Yang,Yao Lu,Xiwen Song,Shengli An,Hailei Zhao

Separation and Purification Technology（2022）

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摘要

•Sr-doping stabilizes the cubic perovskite structure of BaFeO3-based materials.•Ba0.8Sr0.2FeO3-δ delivers high oxygen permeability of 1.25 mL cm−2 min−1 at 900 °C.•More Sr-doping for Ba is favorable to the structural stability.•A slight amount of Ti at Fe-site enhances remarkably the structural stability.•Ba0.6Sr0.4Fe0.92Ti0.08O3-δ shows excellent overall performance.

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关键词

Perovskite ceramic membranes,Doping,Oxygen permeation,Crystal structure,Electrical conductivity,Structural stability

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