Publications Repository - Gdańsk University of Technology

In this work, samples of Y0.07Sr0.93Ti1-xFexO3-d with 20, 40, 60 and 80 mol% of iron amount were prepared by a low-temperature polymer precursor method. The SEM-EDS analysis proved that analyzed Y0.07Sr0.93Ti1-xFexO3-d samples were composites of two Ti- and Fe-rich perovskite samples. This kind of composite consists of two phases in which one has a good ionic and the other electronic conductivity, which makes such a composite a potential mixed ionic and electronic conductors (MIECs) material. The total electrical conductivities of analyzed samples were measured in air atmosphere (cathode conditions in Solid Oxide Fuel Cell). The values changed from ~103 to 101 S cm1 and depended on the ratio between two observed perovskite phases. The 0.12 S cm1 conductivity value at 800 C for sample with the highest amount of Fe-rich perovskite in the structure makes this composite material a candidate for air electrode in electrochemical devices.

Authors

• dr inż. Tadeusz Miruszewski link open in new tab ,
• mgr inż. Paweł Gdaniec link open in new tab ,
• dr inż. Wojciech Rosiński link open in new tab ,
• dr hab. inż. Jakub Karczewski link open in new tab ,
• dr hab. inż. Beata Bochentyn link open in new tab ,
• prof. dr hab. inż. Bogusław Kusz link open in new tab