Figure 5
From: Hierarchical CO2-protective shell for highly efficient oxygen reduction reaction

Stability of the hierarchical LN protected BSCF cathode under working conditions.
The cathode was prepared on a YSZ–Ni (50 : 50 vol%) anode supported SDC(5 μm)|YSZ(5 μm) electrolyte single cell. I–V and I–P curves of the single fuel cell were first tested using air in the cathode side at 600–700°C (purple curves). After introduction of 10 vol% CO2 for 1 h, the fuel cell was tested again in CO2 containing air (green curves).