1. Department of Materials Engineering; Faculty of Technology; University of Novi Sad; Novi Sad 21000 Serbia
2. Joint Research Laboratory Nanomaterials; Technical University Darmstadt & Karlsruhe Institute of Technology; Darmstadt 64287 Germany
3. Electrochemical Energy Storage; Helmholtz Institute Ulm; Ulm 89081 Germany
4. Institute of Nanotechnology; Karlsruhe Institute of Technology; Eggenstein-Leopoldshafen 76344 Germany
5. Karlsruhe Nano Micro Facility; Karlsruhe Institute of Technology; Eggenstein-Leopoldshafen 76344 Germany