Electrochemical characterization of a CFY-stack with planar electrolyte-supported solid oxide cells in rSOC operation

Michael Preininger, Vanja Subotić, Bernhard Stöckl, Richard Schauperl, David Reichholf, Stefan Megel, Mihails Kusnezoff, Christoph Hochenauer

Publikation: Beitrag in Fachzeitschrift/ZeitungArtikel

Abstract

In this study, a ten-layer SOC-stack, consisting of large planar electrolyte supported cells (ESC) and CFY interconnects, was operated in both fuel cell and electrolysis modes considering steam-, co-, and CO2-electrolysis. Different gas mixtures containing H2, H2O, CO, CO2, and N2 were applied for this purpose, and an extensive analyses were performed at two temperatures, 800°C and 850°C. Under these operating conditions, independent Electrochemical Impedance Spectroscopy (EIS) measurements were performed on the stack as a whole, and several cells within the stack concurrently. In order to analyze the losses that occurred during operation, measured impedance values were analyzed, and an electrical equivalent circuit (EEC) for ESCs was applied to the measured impedance spectra. Finally, the electrochemical impedance measurements were performed at both OCV and elevated current densities.
Spracheenglisch
Seiten12398-12412
Seitenumfang15
ZeitschriftInternational Journal of Hydrogen Energy
Band43
Ausgabennummer27
DOIs
StatusVeröffentlicht - 1 Jun 2018

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solid electrolytes
Electrolysis
Electrolytes
impedance
electrolysis
Oxides
oxides
cells
Electrochemical impedance spectroscopy
Gas mixtures
Equivalent circuits
Fuel cells
Steam
Current density
impedance measurement
equivalent circuits
steam
fuel cells
gas mixtures
electrolytes

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    Fields of Expertise

    • Sustainable Systems

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    Electrochemical characterization of a CFY-stack with planar electrolyte-supported solid oxide cells in rSOC operation. / Preininger, Michael; Subotić, Vanja; Stöckl, Bernhard; Schauperl, Richard; Reichholf, David; Megel, Stefan; Kusnezoff, Mihails; Hochenauer, Christoph.

    in: International Journal of Hydrogen Energy, Band 43, Nr. 27, 01.06.2018, S. 12398-12412.

    Publikation: Beitrag in Fachzeitschrift/ZeitungArtikel

    @article{0b60e41bf9704da4ae101f6d6a4c878b,
    title = "Electrochemical characterization of a CFY-stack with planar electrolyte-supported solid oxide cells in rSOC operation",
    abstract = "In this study, a ten-layer SOC-stack, consisting of large planar electrolyte supported cells (ESC) and CFY interconnects, was operated in both fuel cell and electrolysis modes considering steam-, co-, and CO2-electrolysis. Different gas mixtures containing H2, H2O, CO, CO2, and N2 were applied for this purpose, and an extensive analyses were performed at two temperatures, 800°C and 850°C. Under these operating conditions, independent Electrochemical Impedance Spectroscopy (EIS) measurements were performed on the stack as a whole, and several cells within the stack concurrently. In order to analyze the losses that occurred during operation, measured impedance values were analyzed, and an electrical equivalent circuit (EEC) for ESCs was applied to the measured impedance spectra. Finally, the electrochemical impedance measurements were performed at both OCV and elevated current densities.",
    keywords = "reversible Solid Oxide Cell (rSOC), Electrolyte supported cell (ESC) , Steam electrolysis, Co-electrolysis, Hybrid EIS, Multipoint EIS",
    author = "Michael Preininger and Vanja Subotić and Bernhard St{\"o}ckl and Richard Schauperl and David Reichholf and Stefan Megel and Mihails Kusnezoff and Christoph Hochenauer",
    year = "2018",
    month = "6",
    day = "1",
    doi = "10.1016/j.ijhydene.2018.04.230",
    language = "English",
    volume = "43",
    pages = "12398--12412",
    journal = "International journal of hydrogen energy",
    issn = "0360-3199",
    publisher = "Elsevier Limited",
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    TY - JOUR

    T1 - Electrochemical characterization of a CFY-stack with planar electrolyte-supported solid oxide cells in rSOC operation

    AU - Preininger,Michael

    AU - Subotić,Vanja

    AU - Stöckl,Bernhard

    AU - Schauperl,Richard

    AU - Reichholf,David

    AU - Megel,Stefan

    AU - Kusnezoff,Mihails

    AU - Hochenauer,Christoph

    PY - 2018/6/1

    Y1 - 2018/6/1

    N2 - In this study, a ten-layer SOC-stack, consisting of large planar electrolyte supported cells (ESC) and CFY interconnects, was operated in both fuel cell and electrolysis modes considering steam-, co-, and CO2-electrolysis. Different gas mixtures containing H2, H2O, CO, CO2, and N2 were applied for this purpose, and an extensive analyses were performed at two temperatures, 800°C and 850°C. Under these operating conditions, independent Electrochemical Impedance Spectroscopy (EIS) measurements were performed on the stack as a whole, and several cells within the stack concurrently. In order to analyze the losses that occurred during operation, measured impedance values were analyzed, and an electrical equivalent circuit (EEC) for ESCs was applied to the measured impedance spectra. Finally, the electrochemical impedance measurements were performed at both OCV and elevated current densities.

    AB - In this study, a ten-layer SOC-stack, consisting of large planar electrolyte supported cells (ESC) and CFY interconnects, was operated in both fuel cell and electrolysis modes considering steam-, co-, and CO2-electrolysis. Different gas mixtures containing H2, H2O, CO, CO2, and N2 were applied for this purpose, and an extensive analyses were performed at two temperatures, 800°C and 850°C. Under these operating conditions, independent Electrochemical Impedance Spectroscopy (EIS) measurements were performed on the stack as a whole, and several cells within the stack concurrently. In order to analyze the losses that occurred during operation, measured impedance values were analyzed, and an electrical equivalent circuit (EEC) for ESCs was applied to the measured impedance spectra. Finally, the electrochemical impedance measurements were performed at both OCV and elevated current densities.

    KW - reversible Solid Oxide Cell (rSOC)

    KW - Electrolyte supported cell (ESC)

    KW - Steam electrolysis

    KW - Co-electrolysis

    KW - Hybrid EIS

    KW - Multipoint EIS

    U2 - 10.1016/j.ijhydene.2018.04.230

    DO - 10.1016/j.ijhydene.2018.04.230

    M3 - Article

    VL - 43

    SP - 12398

    EP - 12412

    JO - International journal of hydrogen energy

    T2 - International journal of hydrogen energy

    JF - International journal of hydrogen energy

    SN - 0360-3199

    IS - 27

    ER -