1. Institute of Chemistry of New MaterialsThe Electrochemical Energy and Catalysis groupUniversity of Osnabrück Barbarastrasse 7 49076 Osnabrück Germany
2. Hydrogen Energy and Sonochemistry Research groupDepartment of Energy and Process EngineeringFaculty of EngineeringNorwegian University of Science and Technology (NTNU) O-7491 Trondheim Norway
3. Univ. Grenoble AlpesCNRS, Grenoble-INPInstitute of EngineeringUniv. Grenoble Alpes), LEPMI 38000 Grenoble France
4. Department of PhysicsUniversität Osnabrück Barbarastrasse 7 49076 Osnabrück Germany
5. Institut für Chemie neuer MaterialienUniversität Osnabrück Barbarastr. 7 49076 Osnabrück Germany