Double Perovskite – based Mixed Ionic-Electronic Conductors

The project double perovskites as mixed ionic-electronic conductors is devoted to the synthesis and characterization of a new class of highly ordered, chemically and structurally highly complex oxide materials on strontium-iron-vanadium-niobium basis. The physical and chemical properties can be directly steered by the synthesis routine and these materials therefore have the potential to substitute current materials exploited in so-called solid-oxide fuel cells. The key parameter here is the structural stability under the rather extreme temperature and chemical operating conditions of solid-oxide fuel cells and in turn, the maintaining of the ionic and electronic conductivity under these harsh reaction conditions. As we have the possibility to live monitor the changes of the physical and chemical properties under typical operating conditions via the use of dedicated in situ methods, we expect unprecedented insights into the structural and chemical behavior of these materials and the establishment of direct structure-reactivity correlations.