S. Kovacica, H. Krenb, P. Krajncc, S. Kollerb, C. Slugovca

a Graz University of Technology, Institute for Chemistry and Technology of Materials, Stremayrgasse 9, A 8010 Graz, Austria
b VARTA Micro Innovation GmbH, Stremayrgasse 9, 8010 Graz, Austria
c University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova 17, SI-2000 Maribor, Slovenia

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