Hydrogen permeability and effect of microstructure on mixed protonic-electronic conducting Eu-doped strontium cerate
Source abstract
Abstract
The hydrogen permeability of SrCe0.95Eu0.05O3−δ was studied as a function of temperature, hydrogen partial pressure (PH2) gradient, and water vapor partial pressure (PH2O) gradient. The effect of the microstructure on hydrogen permeability through a 1.72 mm thick membrane was investigated. The ambipolar conductivity calculated from hydrogen permeation fluxes showed the same PO2 and PH2 dependence as the electronic conductivity, for the experimental conditions. The small grained membrane showed higher hydrogen permeability when compared with the larger grained membrane over the entire temperature range investigated.
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Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Magnetic and transport properties of perovskites and related materials · Electronic and Structural Properties of Oxides
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