Oxygen- and hydrogen-permeation measurements on-mixed conducting SrFeCo

E. Serra, M. Alvisi, E. Casagrande, G. Bezzi, C. Mingazzini, A. La Barbera

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Abstract

The SrFeCo0.5Oysystem combines high electronic/ionic conductivity with appreciable oxygen permeability at elevated temperatures. This system has potential use in high-temperature electrochemical applications such as solid oxide fuel cells, batteries, sensors, and oxygen separation membranes. Dense ceramic membranes of SrFeCo0.5Oyare prepared by pressing a ceramic powder prepared by using a sol-gel combustion technique. Oxygen and hydrogen permeation at high temperature on this material are studied. Measurements are conducted using a time-dependent permeation method at the temperature in the range of 1073-1273 K with oxygen- and hydrogen-driving pressures in the range (3×102)-(1×105) Pa (300-1000 mbar). The maximum oxygen-permeated flux at 1273 K is 6.5×10-3mol m-2s-1. The activation energies for the O2-permeation fluxes and diffusivities are 240 and 194 kJ/mol, respectively. Due to the high fragility, the high temperature for the measurements and the high oxygen permeation through such material, a special membrane holder, and compression sealing system have been designed and realized for the permeation apparatus. © 2007 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)241 - 247
Number of pages7
JournalRenewable Energy
Volume33
Issue number2
DOIs
Publication statusPublished - Feb 2008
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

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Serra, E., Alvisi, M., Casagrande, E., Bezzi, G., Mingazzini, C., & La Barbera, A. (2008). Oxygen- and hydrogen-permeation measurements on-mixed conducting SrFeCo. Renewable Energy, 33(2), 241 - 247. https://doi.org/10.1016/j.renene.2007.05.028