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    • Keywords


      Intermediate temperature solid oxide fuel cell; ionic conductivity; composite electrolyte; XRD.

    • Abstract


      A nanocomposite, containing gadolinium-doped ceria (GDC, Ce$_{0.85}$Gd$_{0.15}$O$_{1.925}$) and 10 mol% gadoliniumdopedbarium cerate (BGC, BaCe$_{0.85}$Gd$_{0.15}$O$_{2.925}$), was developed as an electrolyte material for intermediate temperature solid oxide fuel cell. The composite powder was synthesized through an auto-combustion process that yielded the desired phases right after combustion. The powder was characterized using X-ray diffraction, particle size analysis, Brunauer–Emmett–Teller surface area analysis and transmission electron microscopy. The electrical properties of the composite electrolyte were characterized by electrochemical impedance spectroscopy under air as a function of temperature. The effect of second phase on total conductivity and activation energy of the composite material was compared with that of GDC of similar composition. For this, GDC (Ce$_{0.85}$Gd$_{0.15}$O$_{1.925}$) powder was produced using a similar processing technique. The microstructural characterization of GDC and GDC–10BGC composite materials was studied through scanning electron microscopy. The electrochemical properties of planar cell, using GDC–10BGC as electrolyte and employing Ni–(GDC–10BGC) and La$_{0.6}$Sr$_{0.4}$Co$_{0.2}$Fe$_{0.8}$O$_{3-\delta}$-based anode and cathode materials, were investigated.

    • Author Affiliations



      1. School of Energy and Environment, Thapar University, Patiala 147001, India
      2. Powder Metallurgy Division, Materials Group, Bhabha Atomic Research Centre, Navi Mumbai 400703, India
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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