Effect of Humidity in Air on Performance and Long-Term Durability of SOFCs

Anke Hagen, Kai Neufeld, Yi-Lin Liu

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    Anode-supported solid oxide fuel cells (SOFCs) based on Ni–yttria-stabilized zirconia (YSZ) anodes, YSZ electrolytes, and lanthanum strontium manganite (LSM)–YSZ cathodes were studied with respect to durability in humid air (~4%) typically over 1500 h. Operating temperature and current density were varied between 750 and 850°C and 0.25–0.75 A/cm2, respectively. The introduction of humidity affected the cell voltage under polarization of the cell, and this effect was (at least partly) reversible upon switching off the humidity. Generally, the studied cells were operated in humid air under technologically relevant conditions over more than 1500 h. Improvements at the cathode/electrolyte interface made it possible to obtain highly stable cells, which can be operated under high current density and at 750°C in humid air, conditions that cause significant cell voltage degradation in dry air on cells with LSM/YSZ-based cathodes.
    Original languageEnglish
    JournalJournal of The Electrochemical Society
    Volume157
    Issue number10
    Pages (from-to)B1343-B1348
    ISSN0013-4651
    DOIs
    Publication statusPublished - 2010

    Bibliographical note

    Copyright The Electrochemical Society, Inc. [2010]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

    Keywords

    • Solid Oxide Fuel Cells
    • Fuel Cells and Hydrogen

    Cite this

    Hagen, Anke ; Neufeld, Kai ; Liu, Yi-Lin. / Effect of Humidity in Air on Performance and Long-Term Durability of SOFCs. In: Journal of The Electrochemical Society. 2010 ; Vol. 157, No. 10. pp. B1343-B1348.
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    title = "Effect of Humidity in Air on Performance and Long-Term Durability of SOFCs",
    abstract = "Anode-supported solid oxide fuel cells (SOFCs) based on Ni–yttria-stabilized zirconia (YSZ) anodes, YSZ electrolytes, and lanthanum strontium manganite (LSM)–YSZ cathodes were studied with respect to durability in humid air (~4{\%}) typically over 1500 h. Operating temperature and current density were varied between 750 and 850°C and 0.25–0.75 A/cm2, respectively. The introduction of humidity affected the cell voltage under polarization of the cell, and this effect was (at least partly) reversible upon switching off the humidity. Generally, the studied cells were operated in humid air under technologically relevant conditions over more than 1500 h. Improvements at the cathode/electrolyte interface made it possible to obtain highly stable cells, which can be operated under high current density and at 750°C in humid air, conditions that cause significant cell voltage degradation in dry air on cells with LSM/YSZ-based cathodes.",
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    author = "Anke Hagen and Kai Neufeld and Yi-Lin Liu",
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    Effect of Humidity in Air on Performance and Long-Term Durability of SOFCs. / Hagen, Anke; Neufeld, Kai; Liu, Yi-Lin.

    In: Journal of The Electrochemical Society, Vol. 157, No. 10, 2010, p. B1343-B1348.

    Research output: Contribution to journalJournal articleResearchpeer-review

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    T1 - Effect of Humidity in Air on Performance and Long-Term Durability of SOFCs

    AU - Hagen, Anke

    AU - Neufeld, Kai

    AU - Liu, Yi-Lin

    N1 - Copyright The Electrochemical Society, Inc. [2010]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

    PY - 2010

    Y1 - 2010

    N2 - Anode-supported solid oxide fuel cells (SOFCs) based on Ni–yttria-stabilized zirconia (YSZ) anodes, YSZ electrolytes, and lanthanum strontium manganite (LSM)–YSZ cathodes were studied with respect to durability in humid air (~4%) typically over 1500 h. Operating temperature and current density were varied between 750 and 850°C and 0.25–0.75 A/cm2, respectively. The introduction of humidity affected the cell voltage under polarization of the cell, and this effect was (at least partly) reversible upon switching off the humidity. Generally, the studied cells were operated in humid air under technologically relevant conditions over more than 1500 h. Improvements at the cathode/electrolyte interface made it possible to obtain highly stable cells, which can be operated under high current density and at 750°C in humid air, conditions that cause significant cell voltage degradation in dry air on cells with LSM/YSZ-based cathodes.

    AB - Anode-supported solid oxide fuel cells (SOFCs) based on Ni–yttria-stabilized zirconia (YSZ) anodes, YSZ electrolytes, and lanthanum strontium manganite (LSM)–YSZ cathodes were studied with respect to durability in humid air (~4%) typically over 1500 h. Operating temperature and current density were varied between 750 and 850°C and 0.25–0.75 A/cm2, respectively. The introduction of humidity affected the cell voltage under polarization of the cell, and this effect was (at least partly) reversible upon switching off the humidity. Generally, the studied cells were operated in humid air under technologically relevant conditions over more than 1500 h. Improvements at the cathode/electrolyte interface made it possible to obtain highly stable cells, which can be operated under high current density and at 750°C in humid air, conditions that cause significant cell voltage degradation in dry air on cells with LSM/YSZ-based cathodes.

    KW - Solid Oxide Fuel Cells

    KW - Fuel Cells and Hydrogen

    KW - Brændselsceller og brint

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    M3 - Journal article

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