The effect of precursor solution desiccation or nano-ceria pre-infiltration on various La0.6Sr0.4FeyCo1-yO3-x infiltrate compositions

Theodore E. Burye, Hongjie Tang, Jason D. Nicholas

    Research output: Contribution to journalArticle

    Abstract

    Here, electrochemical impedance spectroscopy, X-ray diffraction, and scanning electron microscopy were used to determine the effect of precursor solution desiccation and nano-ceria pre-infiltration on Solid Oxide Fuel Cell cathodes with various infiltrate compositions. The calcium chloride desiccation of citric acid containing La0.6Sr0.4FeO3-x (LSF), La0.6Sr0.4Fe0.8Co0.2O3-x (LSFC), La0.6Sr0.4Fe0.5Co0.5O3-x (LSCF55), La0.6Sr0.4Fe0.2Co0.8O3-x (LSCF), and La0.6Sr0.4CoO3-x (LSC) infiltrate precursor solutions reduced average infiltrate particle sizes from the ∼53 nm obtained with standard processing to ∼42 nm. Similarly, infiltration of the aforementioned La0.6Sr0.4FeyCo1-yO3-x precursor solutions into porous cathodes containing pre-infiltrated gadolinium doped ceria (GDC) particles reduced average La0.6Sr0.4FeyCo1-yO3-x infiltrate particle sizes from the ∼53 nm obtained with standard processing (i.e. in the absence of nano-GDC pre-infiltration) to ∼27 nm with nano-GDC pre-infiltration. These desiccation and nano-GDC pre-infiltration induced infiltrate particle size reductions resulted in improved cathode performance. For example, in comparison with the 650°C operating temperatures required for standard LSC-GDC cathodes to achieve a polarization resistance of 0.1Ωcm2, identical cathodes subjected to desiccation or nano-GDC pre-infiltration achieved 0.1Ωcm2 at 630°C and 570°C, respectively. These promising results suggest that precursor solution desiccation or nano-GDC pre-infiltration may be useful for reducing the sizes of a variety of SOFC infiltrate materials.

    Original languageEnglish (US)
    Pages (from-to)F1017-F1022
    JournalJournal of the Electrochemical Society
    Volume163
    Issue number9
    DOIs
    StatePublished - 2016

    Profile

    Cerium compounds
    Cyclic P-Oxides
    infiltration
    Infiltration
    gadolinium
    Gadolinium
    drying
    Cathodes
    Coumestrol
    cathodes
    Particle size
    Pacific Islands
    Acromegaly
    Solid oxide fuel cells (SOFC)
    Chemical analysis
    African horse sickness virus
    Accessory Nerve
    cell cathodes
    calcium chlorides
    citric acid

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Renewable Energy, Sustainability and the Environment
    • Condensed Matter Physics
    • Surfaces, Coatings and Films
    • Electrochemistry
    • Materials Chemistry

    Cite this

    The effect of precursor solution desiccation or nano-ceria pre-infiltration on various La0.6Sr0.4FeyCo1-yO3-x infiltrate compositions. / Burye, Theodore E.; Tang, Hongjie; Nicholas, Jason D.

    In: Journal of the Electrochemical Society, Vol. 163, No. 9, 2016, p. F1017-F1022.

    Research output: Contribution to journalArticle

    Burye, Theodore E.; Tang, Hongjie; Nicholas, Jason D. / The effect of precursor solution desiccation or nano-ceria pre-infiltration on various La0.6Sr0.4FeyCo1-yO3-x infiltrate compositions.

    In: Journal of the Electrochemical Society, Vol. 163, No. 9, 2016, p. F1017-F1022.

    Research output: Contribution to journalArticle

    @article{ce2d37214d2f47008b8f356602843f82,
    title = "The effect of precursor solution desiccation or nano-ceria pre-infiltration on various La0.6Sr0.4FeyCo1-yO3-x infiltrate compositions",
    abstract = "Here, electrochemical impedance spectroscopy, X-ray diffraction, and scanning electron microscopy were used to determine the effect of precursor solution desiccation and nano-ceria pre-infiltration on Solid Oxide Fuel Cell cathodes with various infiltrate compositions. The calcium chloride desiccation of citric acid containing La0.6Sr0.4FeO3-x (LSF), La0.6Sr0.4Fe0.8Co0.2O3-x (LSFC), La0.6Sr0.4Fe0.5Co0.5O3-x (LSCF55), La0.6Sr0.4Fe0.2Co0.8O3-x (LSCF), and La0.6Sr0.4CoO3-x (LSC) infiltrate precursor solutions reduced average infiltrate particle sizes from the ∼53 nm obtained with standard processing to ∼42 nm. Similarly, infiltration of the aforementioned La0.6Sr0.4FeyCo1-yO3-x precursor solutions into porous cathodes containing pre-infiltrated gadolinium doped ceria (GDC) particles reduced average La0.6Sr0.4FeyCo1-yO3-x infiltrate particle sizes from the ∼53 nm obtained with standard processing (i.e. in the absence of nano-GDC pre-infiltration) to ∼27 nm with nano-GDC pre-infiltration. These desiccation and nano-GDC pre-infiltration induced infiltrate particle size reductions resulted in improved cathode performance. For example, in comparison with the 650°C operating temperatures required for standard LSC-GDC cathodes to achieve a polarization resistance of 0.1Ωcm2, identical cathodes subjected to desiccation or nano-GDC pre-infiltration achieved 0.1Ωcm2 at 630°C and 570°C, respectively. These promising results suggest that precursor solution desiccation or nano-GDC pre-infiltration may be useful for reducing the sizes of a variety of SOFC infiltrate materials.",
    author = "Burye, {Theodore E.} and Hongjie Tang and Nicholas, {Jason D.}",
    year = "2016",
    doi = "10.1149/2.0431609jes",
    volume = "163",
    pages = "F1017--F1022",
    journal = "Journal of the Electrochemical Society",
    issn = "0013-4651",
    publisher = "Electrochemical Society, Inc.",
    number = "9",

    }

    TY - JOUR

    T1 - The effect of precursor solution desiccation or nano-ceria pre-infiltration on various La0.6Sr0.4FeyCo1-yO3-x infiltrate compositions

    AU - Burye,Theodore E.

    AU - Tang,Hongjie

    AU - Nicholas,Jason D.

    PY - 2016

    Y1 - 2016

    N2 - Here, electrochemical impedance spectroscopy, X-ray diffraction, and scanning electron microscopy were used to determine the effect of precursor solution desiccation and nano-ceria pre-infiltration on Solid Oxide Fuel Cell cathodes with various infiltrate compositions. The calcium chloride desiccation of citric acid containing La0.6Sr0.4FeO3-x (LSF), La0.6Sr0.4Fe0.8Co0.2O3-x (LSFC), La0.6Sr0.4Fe0.5Co0.5O3-x (LSCF55), La0.6Sr0.4Fe0.2Co0.8O3-x (LSCF), and La0.6Sr0.4CoO3-x (LSC) infiltrate precursor solutions reduced average infiltrate particle sizes from the ∼53 nm obtained with standard processing to ∼42 nm. Similarly, infiltration of the aforementioned La0.6Sr0.4FeyCo1-yO3-x precursor solutions into porous cathodes containing pre-infiltrated gadolinium doped ceria (GDC) particles reduced average La0.6Sr0.4FeyCo1-yO3-x infiltrate particle sizes from the ∼53 nm obtained with standard processing (i.e. in the absence of nano-GDC pre-infiltration) to ∼27 nm with nano-GDC pre-infiltration. These desiccation and nano-GDC pre-infiltration induced infiltrate particle size reductions resulted in improved cathode performance. For example, in comparison with the 650°C operating temperatures required for standard LSC-GDC cathodes to achieve a polarization resistance of 0.1Ωcm2, identical cathodes subjected to desiccation or nano-GDC pre-infiltration achieved 0.1Ωcm2 at 630°C and 570°C, respectively. These promising results suggest that precursor solution desiccation or nano-GDC pre-infiltration may be useful for reducing the sizes of a variety of SOFC infiltrate materials.

    AB - Here, electrochemical impedance spectroscopy, X-ray diffraction, and scanning electron microscopy were used to determine the effect of precursor solution desiccation and nano-ceria pre-infiltration on Solid Oxide Fuel Cell cathodes with various infiltrate compositions. The calcium chloride desiccation of citric acid containing La0.6Sr0.4FeO3-x (LSF), La0.6Sr0.4Fe0.8Co0.2O3-x (LSFC), La0.6Sr0.4Fe0.5Co0.5O3-x (LSCF55), La0.6Sr0.4Fe0.2Co0.8O3-x (LSCF), and La0.6Sr0.4CoO3-x (LSC) infiltrate precursor solutions reduced average infiltrate particle sizes from the ∼53 nm obtained with standard processing to ∼42 nm. Similarly, infiltration of the aforementioned La0.6Sr0.4FeyCo1-yO3-x precursor solutions into porous cathodes containing pre-infiltrated gadolinium doped ceria (GDC) particles reduced average La0.6Sr0.4FeyCo1-yO3-x infiltrate particle sizes from the ∼53 nm obtained with standard processing (i.e. in the absence of nano-GDC pre-infiltration) to ∼27 nm with nano-GDC pre-infiltration. These desiccation and nano-GDC pre-infiltration induced infiltrate particle size reductions resulted in improved cathode performance. For example, in comparison with the 650°C operating temperatures required for standard LSC-GDC cathodes to achieve a polarization resistance of 0.1Ωcm2, identical cathodes subjected to desiccation or nano-GDC pre-infiltration achieved 0.1Ωcm2 at 630°C and 570°C, respectively. These promising results suggest that precursor solution desiccation or nano-GDC pre-infiltration may be useful for reducing the sizes of a variety of SOFC infiltrate materials.

    UR - http://www.scopus.com/inward/record.url?scp=84982728761&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84982728761&partnerID=8YFLogxK

    U2 - 10.1149/2.0431609jes

    DO - 10.1149/2.0431609jes

    M3 - Article

    VL - 163

    SP - F1017-F1022

    JO - Journal of the Electrochemical Society

    T2 - Journal of the Electrochemical Society

    JF - Journal of the Electrochemical Society

    SN - 0013-4651

    IS - 9

    ER -