1. Department of Physics
2. Free University of Berlin
3. 14195 Berlin
4. Germany
5. The Electrochemical Energy, Catalysis, and Materials Science Laboratory
6. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons
7. Forschungszentrum Jülich
8. Jülich
9. Department of Materials and Environmental Chemistry
10. Stockholm University
11. Sweden
12. Department of Chemistry
13. Technical University of Berlin
14. 10623 Berlin