A novel oxygen-electrode catalyst SrCo0.8Fe0.1Ga0.1O3−δ is prepared.
The maximum SOFC output reaches to 1044 mW cm−2 under 750 °C.
An SOEC generate H2 with a rate of 22.9 mL min−1 cm−2 under 2 V at 850 °C.
The cell as either SOFC or SOEC exhibits good stability.