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    Progress and prospects in symmetrical solid oxide fuel cells with two identical electrodes

    Access Status
    Fulltext not available
    Authors
    Su, Chao
    Wang, Wei
    Liu, M.
    Tadé, Moses
    Shao, Zongping
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Su, C. and Wang, W. and Liu, M. and Tadé, M. and Shao, Z. 2015. Progress and Prospects in Symmetrical Solid Oxide Fuel Cells with Two Identical Electrodes. Advanced Energy Materials. 5 (14): Article ID 1500188.
    Source Title
    Advanced Energy Materials
    DOI
    10.1002/aenm.201500188
    ISSN
    1614-6832
    School
    Department of Chemical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150104365
    URI
    http://hdl.handle.net/20.500.11937/6159
    Collection
    • Curtin Research Publications
    Abstract

    Symmetrical solid oxide fuel cells (SOFCs) have attracted increasing attention due to their potential for improved thermomechanical compatibility of the electrolyte and the electrodes, reduced fabrication cost, and enhanced immunity to coking and sulfur poisoning. While the electrode materials of symmetrical SOFCs are initially limited to those with stable phase structures under both reducing and oxidizing atmospheres, many novel electrode materials are currently being developed and investigated that may undergo a beneficial phase transition or reduction in a reducing atmosphere, although the same material may be used initially for the construction of both anode and cathode. Here, the advances made in the development of electrode materials and structures for symmetrical SOFCs are summarized, including single-phase electrodes, multi-phase (composite) electrodes, and those that are reducible upon exposure to a reducing atmosphere. The electrical conductivity, thermomechanical properties, and redox behavior of these electrode materials, together with their performance and stability in different SOFCs, are discussed and analyzed. The problems associated with different types of symmetrical SOFCs are outlined and the materials that show promise as symmetrical electrodes are highlighted, offering critical insights and useful guidelines for knowledge-based rational design of better electrodes for commercially viable symmetrical SOFCs.

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