fig4
Figure 4. EIS spectra of cell with 500 °C annealed BZCY electrolyte, 1,500 °C sintered BZCY electrolyte. (A) in air/air atmosphere at 500 °C, (B) in a H2/air atmosphere at 500 °C, (C) Total (bulk + grain boundary) conductivity and Arrhenius plots of cells with 500 °C annealed BZCY in H2/air and air atmospheres, (D) Total conductivity and Arrhenius plots of cells with 1,500 °C sintered BZCY in H2/air and air atmospheres, (E) bulk and grain boundary conductivity of cell with 500 °C annealed BZCY in H2/air atmospheres, (F) Bulk and grain boundary conductivity of cell with 1,500 °C sintered BZCY in H2/air atmospheres.