Abstract
Methods of suppressing decreased conductivity in 8 mol% Y2O3‐stabilized–92 mol% ZrO2 (8YSZ) with aging were investigated. Different amounts of Sc2O3 were doped into 8YSZ. The electrochemical properties of Sc2O3‐doped 8YSZ were measured, and the microstructural and local structural changes were characterized. The present results indicate that an appropriate amount of Sc2O3 doping, 3 or 4 mol%, effectively suppresses decreased conductivity with aging in 8YSZ.
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