1. Chalmers University of Technology Department of Physics 412 96 Gothenburg Sweden
2. Technical University of Denmark Department of Energy Conversion and Storage 2800 Kgs. Lyngby Denmark
3. Warsaw University of Technology Faculty of Chemistry 00-664 Warsaw Poland
4. Alistore – European Research Institute CNRS FR 3104 Hub de l'Energie 15 Rue Baudelocque 80039 Amiens France