Physical Chemistry of Solids
Oxides play an ever increasing role as advanced functional materials. Examples are tarnishing layers during high temperature oxidation, oxygen ion conducting oxides in high temperature fuel cells, mixed conducting oxides in oxygen permeation membranes, lithiumoxides for batteries, high temperature superconductors, ferroelectrics, catalysts etc. The oxides that are used are complex oxides, i.e. they contain normally several cations and they exist in complicated crystal structures with several sublattices. The properties of these oxides are determined to a large extent by the thermodynamics and kinetics of point defects. Basic research concerning defect chemistry, transport properties and chemical reactivity is the basis for the improvement and optimization of functional materials.
In our research we are using the following techniques:
and we are interested in the following topics:
Current research projects:
- Collaborative project "GRACIS - Chemical gradients in CIS" (BMBF)
- Collaborative project "MEM-OXYCOAL - Oxygen permeable ceramic membranes
- HGF Alliance "MEM-BRAIN - Gas separation membranes for zero-emission fossil
- DFG Priority program 1415 "Crystalline non-equilibrium phases"