| 摘要 |
PURPOSE:To obtain a zirconia solid electrolyte having high electric conductivity by adding a metal oxide having action of stabilizing zirconia as cubic zirconia to zirconia as a base under specified conditions. CONSTITUTION:At least one among Yb2O3, Y2O3, Sc2O3, Sm2O3 and Er2O3 is added to ZrO2 as a base by 14-30mol% [expressed in terms of MO1.5 (M is a metallic element)]. The average ionic radius of the additive is 0.75-0.86Angstrom . Thereby, the objective zirconia solid electrolyte practically having a single phase of cubic zirconia is obtd. |
