The Effect of Nanosize Y₂O₃-ZrO₂, Ce₂O₃ -ZrO₂, and Ce₂O₃-Y₂O₃-ZrO Precursor Dispersity on the Conductivity and Sensor Properties of Final Ceramics

摘要

Nanosize precursors with controlled dispersity were synthesized using the reverse coprecipitation sol-gel method by varying the concentrations of the initial salt solutions. A set of final ceramics (0.08Y₂O₃-0.92ZrO₂, 0.09Ce₂O₃-0.91ZrO₂, 0.06Ce₂O₃ -0.06Y₂O₃-0.88ZrO₂, mol.%) was produced from the precursor powders of different dispersity; their conductivity and sensor properties were investigated. As a result, 0.08Y₂O₃-0.92ZrO₂ ceramics manufactured from the precursor powders with the average agglomerate size of 100-140 nm was shown to be the optimal choice for the use as a solid electrolyte with anionic conductivity.