1. Institute of Chemistry of New Materials
2. The Electrochemical Energy and Catalysis Group
3. University of Osnabrück
4. 49076 Osnabrück
5. Germany
6. Department of Physics
7. Universität Osnabrück
8. Faculty of Agricultural Science and Landscape Architecture
9. Laboratory of Plant Nutrition and Chemistry
10. Osnabrück University of Applied Sciences
11. D-49090 Osnabrück