1. Institute of Electrochemistry Ulm University Albert-Einstein-Allee 47 D-89081 Ulm Germany
2. Karlsruhe Institute of Technology (KIT) P.O. Box 3640 D-76021 Karlsruhe Germany
3. Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage Helmholtzstr. 11 D-89081 Ulm Germany