1. Chemistry
Department, University of Rome - La Sapienza, 00185 Rome, Italy
2. Department
of Energy Engineering, Hanyang University, Seoul 133-791, South Korea
3. Elettrochimica ed Energia, 00199 Rome, Italy
4. Electrochemistry
I, Helmholtz-Institute Ulm, 89081 Ulm, Germany
5. Karlsruher Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
6. BMW Group, 80788 Munich, Germany