1. Electrochemistry Laboratory, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
2. Federal University of São Carlos, Department of Chemistry, C.P. 676, 13560-970 São Carlos, São Paulo, Brazil
3. Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
4. Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, DE-12205 Berlin, Germany
5. Bioenergy and Catalysis Laboratory, Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland