Figure 3

Electrochemical galvanodynamic studies in SOFC and SOEC modes for the TY and CY cells. Solid symbols correspond to the CY cell and hollow symbols to the TY cell. Black: measured at 800 °C using RT humidified hydrogen as fuel. All the rest were measured using 50% steam −50% hydrogen as fuel. Red: measured at 800 °C; Green: measured at 700 °C; Blue: measured at 600 °C. The inset corresponds to a magnification for both samples at low current densities (700 °C).