1. Institute of Inorganic and Analytical Chemistry Friedrich Schiller University Jena (FSU) Humboldtstraße 8 07743 Jena Germany
2. Zentrum für Sonnenenergie und Wasserstoff-Forschung Baden-Württemberg Helmholtzstraße 8 89081 Ulm Germany
3. Institute of Electrochemistry University Ulm Albert-Einstein-Allee 47 89081 Ulm Germany
4. Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage Helmholtzstraße 11 89081 Ulm Germany
5. Karlsruhe Institute of Technology (KIT) P.O. Box 3640 D-76021 Karlsruhe Germany