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The aim of this research is to study zirconia-based electrolyte materials to increase the commercial value of zircon concentrate as a side product of tin mining industries.Synthesis of CaO-Y2O3-ZrO2 (CYZ) and 8mol％ Y2O3-ZrO2 (8YSZ) was carried out by solid state reaction.The result shows that ZrO2 presents in tetragonal phase.Doping of Y2O3 into ZrO2 allows a phase transformation from tetragonal into cubic structure with small percentage of monoclinic phase.Meanwhile,doping of CaO-Y2O3 allows a phase transformation into a single cubic phase.These phase transformations enhance the ionic conductivity of the material.Introduction of 10wt％ of LSGM-8282 into CYZ (CYZ-L90:10) allows further improvement of inter-grain contact shown by SEM morphological analysis and leads to the enhancement of ionic conductivity.