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Synthesis and characterization of (La, Cu) co-doped CeO2 nanomaterials used as electrolyte material in SOFC applications

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Abstract

This paper, it is aimed that nanometer-sized powders can be successfully prepared by using the sol–gel process so that sintering temperatures can be reduced and they can be used as suitable electrolyte candidate materials for medium-temperature SOFC applications. Fort his, bare CeO2 (cerium dioxide), which has not yet been encountered in the literature, and La,Cu co-doped CeO2 nanoparticles with different molar ratios (1%, 5%, and 10%) were synthesized as electrolyte material using the sol–gel method for intermediate-temperature solid oxide fuel cells (IT-SOFCs) applications. The synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), UV–Vis spectroscopy, and particle size analysis techniques. In order to examine the effect of doping, the structural, morphological, and optical properties of bare cerium oxide and doped cerium oxide powders were compared. With the doping process, reductions in average particle sizes were observed, and it was determined that the sample with the lowest average particle size was 5% (La, Cu) co-doped CeO2. It has been confirmed by XRD and SEM/EDX that bare CeO2 and co-doped CeO2 powder synthesized have been successfully achieved by the sol–gel technique. The results show that the La,Cu co-doped CeO2 sample is promising as an electrolyte material in SOFC applications.

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Acknowledgements

This work was supported by Alanya Alaaddin Keykubat University, Scientific Research Projects Coordinatorship under Project Number 2022-02-03-LAP05. The author would like to thank undergraduate student Kübra Nur Küçük for her help during the experimental phase.

Funding

The author did not receive support from any organization for the submitted work. No funding was received to assist with the preparation of this manuscript. No funding was received for conducting this study. No funds, grants, or other support was received.

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  1. Department of Metallurgy and Materials Engineering, Rafet Kayış Faculty of Engineering, Alanya Alaaddin Keykubat University, Antalya, Turkey

    Fatma Aydın Ünal

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Correspondence to Fatma Aydın Ünal.

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Aydın Ünal, F. Synthesis and characterization of (La, Cu) co-doped CeO2 nanomaterials used as electrolyte material in SOFC applications. Appl. Phys. A 129, 817 (2023). https://doi.org/10.1007/s00339-023-07114-x

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