Study on Multi-Doped Ceria-Based Solid Electrolytes

Abstract:

Doped ceria-based (Gd0.2Ce0.8O1.9, GDC) solid electrolytes were prepared by Solid-phase synthesis method. The effect of doping bismuth oxide and samarium oxide on the phase and microstructure of GDC was investigated. The phase composition was analyzed by the X-ray diffraction (XRD).The single cubic fluorite structure was observed after doping these oxides. Appearance and microstructure of doped ceria-based solid electrolytes were analyzed by the scanning electron microscopy (SEM) and the transmission electron microscopy (TEM). The results showed that the doped trivalent cations had entered into the ceria structure uniformly. The density, porosity rate and water absorption of GDC were measured by Archimedes principle. It indicated that the density of doped GDC solid electrolyte increased with the rising of sintering temperature.

• Periodical: Key Engineering Materials (Volume 519)
• Pages: 28-31
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.519.28
• Online since: July 2012
• Authors: Yong Li Yao, Yan Gai Liu, Zhao Hui Huang, Ming Hao Fang
• Keywords: Doped Ceria-Based Solid Electrolyte, Phase, Sintering Property, Structure

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