The influence of sintering condition on microstructure, phase composition, and electrochemical performance of the scandia-ceria-Co-doped zirconia for SOFCs

Samples of 6 mol%Sc2O3 ? 1 mol% CeO2 co doped ZrO2 were fabricated by conventional ceramic processing methods and sintered at various temperatures from 1000?C to 1650?C in air. The sintering conditions on microstructure phase content are investigated using characterization methods, including pycnometry, diffraction, spectroscopy. electrical conductivity samples was electrochemical impedance spectroscopy (EIS). effect inductive load (measured room temperature 800?C) is discussed low high regimes. At T < 400?C since the arc not a complete semicircle, high-frequency could be fit constant element (CPE), while subtraction load, good achieved capacitor instead CPE. Arrhenius plot reveals that specimen 1600?C for hours exhibits highest conductivity. activation energy (Ea) pre-exponential (??0) factor calculated linear data decreases increase temperature.