Prof. Dr. Werner Weppner holds since 1993 the Chair for Sensors and Solid State Ionics at the Faculty of Engineering of Christian Albrechts University, Kiel, Germany. He has been earlier at the Max-Planck-Institute for Solid State Research, Stuttgart and a Research Professor at Stanford University, CA, USA, in the Department of Materials Science and Engineering. Prof. Weppner holds a diploma in physics from Mainz University and a Ph.D. in chemistry from Dortmund University, both Germany. His research interests are based on fast ionic transport in solids and include both fundamental understanding and practical application aspects.