1. Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage, Helmholtzstraße 11, D-89081 Ulm, Germany
2. Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
3. Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (ZSW), Lise-Meitner-Straße 24, D-89081 Ulm, Germany
4. Electron Microscopy Group of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
5. Institute of Nanotechnology, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany