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<p>In the present study, Sm and Gd co-doped ceria is prepared with stoichiometry of Ce<sub>1-a</sub>Gd<sub>a-y</sub>Sm<sub>y</sub>O<sub>2-0.5δ</sub> (a = 0.20 and 0 ≤ y ≤ a), which is reported to have higher ionic conductivity at low temperatures compared to ceria doped with individual dopant. XRD and Raman spectroscopy confirmed the successful substitution of both dopants to form a single phase cubic structure. FESEM showed a highly dense microstructure (~ 98% density) and EDX confirmed the elemental composition. EIS study in the temperature range of 400-700°C revealed that the material has extraordinary grain boundary and effective conductivity of ~ 0.15 and 0.095 S/cm, respectively.</p> Graphical abstract <p></p>

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Investigating the role of co-doping on ceria as an efficient electrolyte for low temperature SOFC application

  • 期刊论文

  • 发表日期：

    2025年10月27日

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  • Prerna Vinchhi,
  • Mukesh Khandla,
  • Rutvi Mistry,
  • Abhijit Ray,
  • Ranjan Pati

摘要

In the present study, Sm and Gd co-doped ceria is prepared with stoichiometry of Ce1-aGda-ySmyO2-0.5δ (a = 0.20 and 0 ≤ y ≤ a), which is reported to have higher ionic conductivity at low temperatures compared to ceria doped with individual dopant. XRD and Raman spectroscopy confirmed the successful substitution of both dopants to form a single phase cubic structure. FESEM showed a highly dense microstructure (~ 98% density) and EDX confirmed the elemental composition. EIS study in the temperature range of 400-700°C revealed that the material has extraordinary grain boundary and effective conductivity of ~ 0.15 and 0.095 S/cm, respectively.

Graphical abstract