Oxygen Permeability of Mixed Ionic and Electronic Conductivity Y_(1-x)La_xBa_2Cu_3O_(7-δ) Membranes
Source abstract
Abstract
Oxygen permeation fluxes through dense perovskite-related type Y1-x LaxBa2Cu3O7-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 LaBa2Cu3O7-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 ℃.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Physics of Superconductivity and Magnetism · Magnetic and transport properties of perovskites and related materials
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