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Oxygen- and hydrogen-permeation measurements on-mixed conducting SrFeCo0.5Oy ceramic membrane material

TitleOxygen- and hydrogen-permeation measurements on-mixed conducting SrFeCo0.5Oy ceramic membrane material
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2008
AuthorsSerra, Emanuele, Alvisi Marco, Casagrande E., Bezzi G., Mingazzini C., and La Barbera A.
JournalRenewable Energy
Volume33
Pagination241-247
ISSN09601481
KeywordsCeramic membrane, Ceramic membranes, Ceramics, combustion, electrical conductivity, Electrochemistry, Hydrogen, Hydrogen permeability, Ionic conductivity, Ionic conductor, measurement method, Mechanical permeability, Membrane, Oxygen, permeability
Abstract

The SrFeCo0.5Oy system 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 SrFeCo0.5Oy are 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 6.5×10-3 mol m-2 s-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.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-36549002230&doi=10.1016%2fj.renene.2007.05.028&partnerID=40&md5=a5ab452718d7febabdf5b7a4ec3a99a2
DOI10.1016/j.renene.2007.05.028
Citation KeySerra2008241