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Theoretical description of superionic conductivities in samaria doped ceria based nanocomposites
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
2010 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 97, no 18, 183115- p.Article in journal (Refereed) Published
Abstract [en]

Superionic conductivity becomes true based on recent developments on ceria-based nanocomposites as electrolytes with application for low temperature (300-600 degrees C) solid oxide fuel cells. We theoretically describe the superionic conductivity phenomena in samaria doped ceria nanocomposites. An improved effective-medium model was used to determine the ionic conductivity of the materials focusing on a core-shell structure of the as-prepared samaria doped ceria based composite particles. This work reveals the enhancement of ionic conductivity by interface proton and oxygen ion transportation in the composites, which agrees well with the experimental results.

Place, publisher, year, edition, pages
2010. Vol. 97, no 18, 183115- p.
Keyword [en]
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-27100DOI: 10.1063/1.3513375ISI: 000283934100068ScopusID: 2-s2.0-78649255376OAI: diva2:375977
QC 20101209Available from: 2010-12-09 Created: 2010-12-06 Last updated: 2010-12-09Bibliographically approved

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