Oxygen ion conductance in epitaxially grown thin film electrolytes

S. Thevuthasan, Z. Yu, S. Kuchibhatla, L. V. Saraf, O. A. Marina, V. Shutthanandan, P. Nachimuthu, C. M. Wang

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    This paper briefly summarizes the results from a project aimed to develop an understanding of oxygen ionic transport processes in highly oriented thin film oxide materials to enable the design of new types of electrolyte materials for solid state electrochemical devices. We have used oxygen-plasma-assisted molecular beam epitaxy (OPA-MBE) to grow highly oriented doped ceria. zriconia thin films on single crystal C-Al2O3 along with multilayered hetero-structures. The influence of dopant concentration, interfaces, defects and crystalline quality on oxygen ionic conductivity has been critically analyzed using various surface and bulk sensitive capabilities. Although, preferred (111) orientation was preserved in high quality samaria doped ceria films up to a 10 atom% Sm doping, the films started to show polycrystalline features for higher Sm doping, Maximum conductivity was obtained for 5 atom% Sm doping in ceria, In the case of gadolinio doped ceria/zirconia multi-layer films, total conductivity was found to increase with the increasing number of layers.

    Original languageEnglish
    Title of host publicationAdvances in Solid Oxide Fuel Cells IV - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites
    PublisherAmerican Ceramic Society
    Pages229-240
    Number of pages12
    Edition5
    ISBN (Print)9780470344965
    DOIs
    Publication statusPublished - 1 Jan 2009
    EventAdvances in Solid Oxide Fuel Cells IV - 32nd International Conference on Advanced Ceramics and Composites - Daytona Beach, FL, United States
    Duration: 27 Jan 20081 Feb 2008

    Publication series

    NameCeramic Engineering and Science Proceedings
    Number5
    Volume29
    ISSN (Print)0196-6219

    Other

    OtherAdvances in Solid Oxide Fuel Cells IV - 32nd International Conference on Advanced Ceramics and Composites
    CountryUnited States
    CityDaytona Beach, FL
    Period27/1/081/2/08

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    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry

    Cite this

    Thevuthasan, S., Yu, Z., Kuchibhatla, S., Saraf, L. V., Marina, O. A., Shutthanandan, V., Nachimuthu, P., & Wang, C. M. (2009). Oxygen ion conductance in epitaxially grown thin film electrolytes. In Advances in Solid Oxide Fuel Cells IV - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites (5 ed., pp. 229-240). (Ceramic Engineering and Science Proceedings; Vol. 29, No. 5). American Ceramic Society. https://doi.org/10.1002/9780470456309.ch21