Seminarium Fizyki Ciała Stałego

Solid state materials with high ionic conductivity are widely studied as a critical components of various electrochemical devices. Ceramic oxide ion conductors are currently applied in SOFC fuel cells, gas sensors, electrolysers or oxygen pumps. The long-range transport of oxygen ions in the solid state depends predominantly on the oxide ion vacancy concentration, but also on the distribution of vacancies in the crystal structure including, their ordering and interaction with the cationic and anionic sublattice. In this presentation characteristic features of long range ionic transport will be discussed for some of bismuth oxide based materials. These compounds show both highest known oxide ion conductivity, but at the same time face undesirable phase transitions and instabilities. Wide range of advanced experimental methods and computer modeling were used to study both the long- and short-range ordering of the structure. Changes in the distribution of oxygen ions and the concentration of defects will be discussed and their influence on ionic transport as well as the mentioned instabilities and phase transitions.UwagaSeminarium w trybie HybrydowymFaculty of Physics room 0.06link to remote mode:https://zoom.us/j/7218838148szczegóły patrz instrukcja :instrukcja: (pdf file)AttentionThe seminar in the Hybrid modeFaculty of Physics room 0.06for details see instruction :instruction: (pdf file)