1. Eduard-Zintl-Institute for Inorganic and Physical Chemistry Technical University Darmstadt Alarich-Weiss-Straße 12 64287 Darmstadt Germany
2. Institute of Radiation Physics Helmholtz-Zentrum Dresden-Rossendorf Bautzner Landstraße 400 01328 Dresden Germany
3. Institute for Applied Materials—Energy Storage Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein- Leopoldshafen Germany