Electrical properties of GdBaCo2O5+x for ITSOFC applications

In order to develop a cathode that can be used in intermediate temperature solid oxide fuel cells (ITSOFC), the double perovskite material GdBaCo2O5+x has been prepared and its electrode performance investigated at temperatures below 700 °C by AC impedance spectroscopy. Preliminary results show that the ASRs of GdBaCo2O5+x cathode materials are as low as 0.53 Ω cm2 at 645 °C. This encouraging data identifies GdBaCo2O5+x as a potential cathode material for ITSOFCs.