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Structural and electrical characterization of the novel SrCo1-xTixO3–δ (x = 0.05, 0.1 and 0.15) perovskites: Evaluation as cathode materials in solid oxide fuel cells

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  • Cascos, V.
  • Fernández-Díaz, M.T.
  • Alonso, J.A.

Abstract

The SrCoO3-δ perovskite system is able to incorporate Ti at the Co positions, stabilizing a tetragonal perovskite superstructure that combines excellent electronic and ionic conductivity. These materials outperform as cathodes in solid-oxide fuel cells (SOFC). An in situ neutron powder diffraction (NPD) study of SrCo0.95Ti0.05O3−δ between 200 and 800 °C (working conditions of a SOFC) allowed us to analyze the crystal structure and correlate it with the performance. The effect of Ti4+ doping on the thermal, electrical, and electrochemical properties of SrCo1-xTixO3−δ (x = 0.05, 0.1 and 0.15) perovskite oxides is discussed.

Suggested Citation

  • Cascos, V. & Fernández-Díaz, M.T. & Alonso, J.A., 2019. "Structural and electrical characterization of the novel SrCo1-xTixO3–δ (x = 0.05, 0.1 and 0.15) perovskites: Evaluation as cathode materials in solid oxide fuel cells," Renewable Energy, Elsevier, vol. 133(C), pages 205-215.
    • Handle: RePEc:eee:renene:v:133:y:2019:i:c:p:205-215
    DOI: 10.1016/j.renene.2018.09.073
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    1. Zongping Shao & Sossina M. Haile, 2004. "A high-performance cathode for the next generation of solid-oxide fuel cells," Nature, Nature, vol. 431(7005), pages 170-173, September.
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    1. Nassef, Ahmed M. & Fathy, Ahmed & Sayed, Enas Taha & Abdelkareem, Mohammad Ali & Rezk, Hegazy & Tanveer, Waqas Hassan & Olabi, A.G., 2019. "Maximizing SOFC performance through optimal parameters identification by modern optimization algorithms," Renewable Energy, Elsevier, vol. 138(C), pages 458-464.
    2. Lv, Xiuqing & Chen, Huili & Zhou, Wei & Li, Si-Dian & Cheng, Fangqin & Shao, Zongping, 2022. "SrCo0.4Fe0.4Zr0.1Y0.1O3-δ, A new CO2 tolerant cathode for proton-conducting solid oxide fuel cells," Renewable Energy, Elsevier, vol. 185(C), pages 8-16.
    3. Zapata-Ramírez, Víctor & Rosendo-Santos, Paula & Amador, Ulises & Ritter, Clemens & Mather, Glenn C. & Pérez-Coll, Domingo, 2022. "Optimisation of high-performance, cobalt-free SrFe1-xMoxO3-δ cathodes for solid oxide fuel cells prepared by spray pyrolysis," Renewable Energy, Elsevier, vol. 185(C), pages 1167-1176.
    4. Farnak, M. & Esfahani, J.A. & Bozorgmehri, S., 2020. "An experimental design of the solid oxide fuel cell performance by using partially oxidation reforming of natural gas," Renewable Energy, Elsevier, vol. 147(P1), pages 155-163.

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    Keywords

    Cathode; IT-SOFC; SrCoO3; Perovskite; Neutron diffraction;
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