1. Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Padua, Italy
2. Department of Chemical Sciences, University of Padua, Padua, Italy
3. FSN Department, ENEA, C. R. Frascati, Frascati, Italy
4. Institute of Condensed Matter Chemistry and Technologies for Energy, National Research Council of Italy (ICMATE-CNR), Padua, Italy
5. EDF, Barnwood, U.K.
6. Department of Materials, Imperial College London, South Kensington Campus, London, U.K.