The effect of y by Yb substitution in BaCe0.5Zr0.3Y0.2O3-Δ on the target properties of proton-conducting electrolytes

Abstract

The BaCe0.5Zr0.3Y0.2-xYbxO3-δ ceramic materials are prepared and characterized in the present work. The impact of the partial Y3+/Yb3+ substitution on i) crystal structure, ii) microstructure (relative density, grain size), iii) thermal properties (linear expansion, thermal expansion coefficient) and iv) electrical properties (nature and value of conductivity) is identified. The BaCe0.5Zr0.3Y0.1Yb0.1O3-δ possesses high density, high conductivity, but relative low thermal expansion coefficient.