Oxygen Permeability of Mixed Ionic and Electronic Conductivity Y1-xLaxBa2Cu3O7-δ Membranes

Journal of Inorganic Materials

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Oxygen Permeability of Mixed Ionic and Electronic Conductivity Y_1-xLa_xBa₂Cu₃O_7-δ Membranes

SONG Hong-Zhang, YANG De-Lin, HU Jie, HAO Hao-Shan, HU Xing

School of Physical Engineering, Material Physics Key Laboratory of Ministry of Education, Zhengzhou University, Zhengzhou 450052, China

Received:2004-12-13 Revised:2005-02-23 Published:2006-01-20 Online:2006-01-20

Abstract

Abstract: Oxygen permeation fluxes through dense perovskite-related type Y_1-xLa_xBa₂Cu₃O_7-δ(x=0.1, 0.3, 0.5, 0.8 and 1.0) membranes were investigated by the steady state permeation method in a temperature
range from 750℃ to 1000℃. Oxygen permeation flux increases with the increase in La element substitution proportions, and increases sharply at about 875℃ due to an order-
disorder transition of the oxygen vacancies in the membrane. oxygen flux of LaBa₂Cu₃O_7-δ(x=1.0) membrane with thickness 1.0mm reaches 1.22 μmol/s·cm² (1.64 mL/min·cm²)
under air/He gradients at 1000℃.

Key words: perovskite-related type, oxygen permeation membrane, Y_1-xLa_xBa₂Cu₃O_7-δ, oxygen flux

CLC Number:

O484

SONG Hong-Zhang,YANG De-Lin,HU Jie,HAO Hao-Shan,HU Xing. Oxygen Permeability of Mixed Ionic and Electronic Conductivity Y_1-xLa_xBa₂Cu₃O_7-δ Membranes[J]. Journal of Inorganic Materials.

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Oxygen Permeability of Mixed Ionic and Electronic Conductivity Y_1-xLa_xBa₂Cu₃O_7-δ Membranes

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