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

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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
      Keywords:cathode, conductivity, fuel cell, oxide-carbonate composite, perovskite, Chemical engineering, Renewable Energy, Sustainability and the Environment, Fuel Technology, Condensed Matter Physics, Energy Engineering and Power Technology
      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:25 May 2021 00:25
      Related URLs:
      URI:https://strathprints.strath.ac.uk/id/eprint/47431
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