1. Eduard Zintl Institute for Inorganic and Physical Chemistry Technical University of Darmstadt Peter-Grünberg-Straße 8 64287 Darmstadt Germany
2. Institute for Technical Chemistry and Environmental Chemistry Friedrich-Schiller-University Jena Philosophenweg 7a 07743 Jena Germany
3. Center for Energy and Environmental Chemistry Jena (CEEC Jena) Friedrich Schiller University Jena Philosophenweg 7a 07743 Jena Germany