Tailoring Mixed Ionic Electronic Conducting nano-particle size through desiccation and/or doped ceria oxide pre-infiltration

T. E. Burye, J. D. Nicholas

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

    Abstract

    Mixed Ionic Electronic Conducting (MIEC) multi-cation oxide nano-particles are commonly used to enhance the performance of Solid Oxide Fuel Cell (SOFC) Nano-Composite Cathodes (NCCs) electrodes. The average MIEC NCC particle size produced by the infiltration method are typically 50-60 nm in diameter and result in SOFC operating temperatures in excess of 600°C. Since particle size directly correlates with the surface area available for oxygen incorporation and hence NCC performance, the objective of this study was to determine if infiltrate particle size could be reduced through nitrate gel desiccation and/or the pre-infiltration of a nitrate decomposition catalyst. For the La0.6Sr0.4Co0.8Fe0.2O 3-δ (LSCF) infiltrate particles examined here, average particle sizes were reduced from 50 nm to 20 nm using both processing techniques. These reduced LSCF particle sizes lowered the 550°C NCC polarization resistance from 0.33 Ωcm2 to 0.16 Ωcm2 with desiccation and 0.33 Ωcm2 to 0.11 Ωcm2 with nitrate decomposition catalyst pre-infiltration.

    Original languageEnglish (US)
    Title of host publicationECS Transactions
    PublisherElectrochemical Society Inc.
    Pages85-91
    Number of pages7
    Volume61
    Edition1
    DOIs
    StatePublished - 2014

    Profile

    Particle size
    Infiltration
    Cathodes
    Composite materials
    Nitrates
    Solid oxide fuel cells (SOFC)
    Decomposition
    Catalysts
    Oxides
    Cerium compounds
    Gels
    Positive ions
    Polarization
    Electrodes
    Oxygen
    Temperature

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Tailoring Mixed Ionic Electronic Conducting nano-particle size through desiccation and/or doped ceria oxide pre-infiltration. / Burye, T. E.; Nicholas, J. D.

    ECS Transactions. Vol. 61 1. ed. Electrochemical Society Inc., 2014. p. 85-91.

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

    Burye TE, Nicholas JD. Tailoring Mixed Ionic Electronic Conducting nano-particle size through desiccation and/or doped ceria oxide pre-infiltration. In ECS Transactions. 1 ed. Vol. 61. Electrochemical Society Inc.2014. p. 85-91. Available from, DOI: 10.1149/06101.0085ecst

    Burye, T. E.; Nicholas, J. D. / Tailoring Mixed Ionic Electronic Conducting nano-particle size through desiccation and/or doped ceria oxide pre-infiltration.

    ECS Transactions. Vol. 61 1. ed. Electrochemical Society Inc., 2014. p. 85-91.

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

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