Fabrication of yttria stabilized zirconia nanoparticles by the reverse microemulsion method for SOFC applications

Abstract

Yttria stabilized zirconia powders were synthesized by the reverse microemulsion method. Powders were calcined from 600 degrees C to 1000 degrees C and sintered at 1450 degrees C. Crystalline properties and microstructure of samples were characterized by X-ray diffraction and scanning electron microscopy, respectively. Oxygen ionic conductivity was measured by electrochemical impedance spectroscopy. Sizes of yttria stabilized zirconia particles calcined at 1000 degrees C are lower than 100 nm, and approximately, 1 mu m grain was obtained after sintering at 1450 degrees C.