Janek Jurgen
Janek Jurgen
Giessen University, Germany
The key advantages expected from solid-state batteries have gradually changed with time. While originally, safety was a strong trigger for SSB research and development, later high specific energy and high specific power came up as major drivers. Meanwhile expectations are as diverse as the various SSB cell concepts - which range from hybrid or multilayer cell concepts to ceramic cell concepts, yet specific energy and power are still top KPIs. A key issue of all SSB cell concepts is still their kinetics at low stack pressure, that limits both specific energy and power. In this presentation, first an up-to-date benchmark will be presented. Second, the most critical factors limiting cell kinetics will be identified and discussed. Own results on sulfide-type Li and Na solid-state battery cells will be presented, also highlighting the need for improved standards in experiments, testing and reporting.
Jürgen Janek has a chair for Physical Chemistry at Justus Liebig University in Giessen (JLU). Germany, is director of the JLU Center for Materials Research and Scientific Director of the BELLA lab at KIT, Karlsruhe. He was visiting professor at Seoul National University (South Korea), Tohoku University (Sendai, Japan) and D´Aix-Marseille (France), holds a honorary doctorate by TU Delft (Netherlands), is member of the Leopoldina – German National Academy of Sciences and was recently awarded with the first Greve Prize by Leopoldina and the Research Award of the International Battery Association. He holds numerous patents, has published more than 500 peer-reviewed papers and got numerous awards. His research interests focus on the physical chemistry of inorganic solids, solid state ionics and reactivity, specifically on the properties of mixed ionic-electronic conductors, defect chemistry of ionic materials, kinetics of solid-state reactions and solid-solid interfaces. In recent years his research is focused strongly to the chemistry of battery materials, solid electrolytes and solid-state batteries and operando studies of batteries. He is scientific coordinator of the German Cluster of Competence for Solid State Batteries FESTBATT funded by BMBF (Federal Ministry for Education and Research) and member of the DFG Cluster of Excellence POLIS at Ulm/Karlsruhe.