An intermediate temperature fuel cell based on composite electrolyte of carbonate and doped barium cerate with SrFe0.7Mn0.2Mo 0.1O3-δ cathode

Zhang, Lei and Lan, Rong and Tao, Shanwen (2013) An intermediate temperature fuel cell based on composite electrolyte of carbonate and doped barium cerate with SrFe0.7Mn0.2Mo 0.1O3-δ cathode. International Journal of Hydrogen Energy, 38 (36). pp. 16546-16551. ISSN 0360-3199 (https://doi.org/10.1016/j.ijhydene.2013.06.029)

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Abstract

BaCeO3-based proton conductor BaCe0.5Zr 0.3Y0.16Zn0.04O3-δ (BCZYZn) was adopted as a part of the oxide-carbonate composite electrolyte. The total ionic conductivity of BCZYZn-carbonate composite is 0.28 S cm-1 at 500 C. Perovskite oxide SrFe0.7Mn0.2Mo0.1O 3-δ was developed and used as cathode. It was found that SrFe0.7Mn0.2Mo0.1O3-δ exhibits a primitive cubic structure with space group Pm3m(221); a = 3.8790(1) Å, V = 58.364(1) Å3. The electrical conductivity of SrFe 0.7Mn0.2Mo0.1O3-δ is 15-26 S cm-1 in the temperature range 400-700 C measured by d.c. method. Single cell with BCZYZn-carbonate composite electrolyte and SrFe 0.7Mn0.2Mo0.1O3-δ cathode was fabricated and tested with humidified H2 (∼3 vol% H2O) as fuel and air as oxidant. A similar configuration cell with lithiated NiO cathode was also constructed for comparison. It was found that neither BaCe 0.5Zr0.3Y0.16Zn0.04O 3-δ nor SrFe0.7Mn0.2Mo 0.1O3-δ is chemically compatible with (Li,Na) 2CO3. The fuel cell performance is not as good as those based on doped ceria-carbonate electrolytes.

  • Item type:Article
    ID code:47431
    Dates:
    Date
    Event
    13 December 2013
    Published
    12 July 2013
    Published Online
    Notes:NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, VOL38, ISSUE36, (2013) DOI: 10.1016/j.ijhydene.2013.06.029
    Subjects:Technology > Chemical engineering
    Department:Faculty of Engineering > Chemical and Process Engineering
    University of Strathclyde > University of Strathclyde
    Depositing user: Pure Administrator
    Date deposited:11 Apr 2014 07:32
    Last modified:17 Apr 2024 00:18
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/47431
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