Synthesis of Co-Doped and Triple-Doped Cerium Oxide Using a Sol Gel Procedure as Electrolyte of Solid Oxide Fuel Cell

Abstract

Meysam Abdolmaleki, Mohammad Kazazi* and Samira Kazazi

Solar energy could be combined with other green energy generation systems such as solid oxide fuel cells for more efficient energy conversion. CeO2 is amongst materials that are promising for fabricating the electrolyte of solid oxide fuel cells. The present paper illustrates the synthesis of Na, Ca, Sr and Sm co-doped and triple-doped into Ce sites of CeO2 system through a sol gel procedure. It could be speculated that substitution of Ce with single or de-valance elements would enhance the ion-exchange mechanism in CeO2 electrolyte of a solid oxide fuel cell. The phase structure of the sintered materials is analyzed using powder x-ray diffraction pattern. The lattice constant of the co-doped and triple-doped-CeO2 materials is refined for all the samples. The obtained results confirm the successful insertion of dopants into Ce sites. The microstructure characterization and elemental analysis is performed for all the samples via a field emission scanning electron microscope and the energy dispersive x-ray spectroscopy techniques, respectively.

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