Abstract
Ce0.8Sm0.2O1.95 solid electrolytes were synthesized by a modified homogeneous precipitation method aiming optimizing their densification behavior and electrical conductivity. Nanoparticles with 3 to 8 nm in diameter were obtained after calcination at 450 and 700ºC, respectively. The linear shrinkage of powder compacts shows an endset temperature around 1200ºC with maximum shrinkage rate at 1000ºC. High relative density values (~ 93%) were obtained for pellets prepared from mixed solvents at only 1150ºC. The electrical conductivity of both grains and grain boundaries exhibits a considerable dependence on the type of alcohol used as solvent and on the residual porosity.
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