1. Department of Chemistry University of Bayreuth Universitätsstr. 30 95447 Bayreuth Germany
2. Bavarian Center for Battery Technology (BayBatt) University of Bayreuth Universitätsstr. 30 95447 Bayreuth Germany
3. Technical Technology III and Center for Nanointegration (CENIDE) University Duisburg-Essen Carl-Benz-Str. 199 47057 Duisburg Germany