1. Institute for Chemistry and Technology of Materials and Christian Doppler Laboratory for Lithium Batteries, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
2. Department of Chemistry and Physics of Materials, University of Salzburg, 5020 Salzburg, Austria
3. Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, 85748 Garching, Germany