Fig. 1: Current-voltage and power density characteristics for the SOFCs.

a BCFZY and b BCFMY positrodes are used in 10, 21, 40, and 100%O₂-N₂ at 600 ^oC. The open symbols are voltage (V; left axis), and the solid symbols are power density (p; right axis). The OCV is the voltage at the intercept of left axis (i = 0 A cm⁻²).