1. 1National Institute for Research and Development in Electrochemistry and Condensed Matter, 300569, Timisoara, Romania
2. 2Faculty of Industrial Chemistry and Environmental Engineering, University “POLITEHNICA” of Timisoara, 300006, Timisoara, Romania
3. 3Faculty of Chemistry and Chemical Engineering, “Babes-Bolyai” University, 400028, Cluj, Romania
4. 4Department of Physical Chemistry, Collegium Medicum, Nicolaus Copernicus University, 85-950, Bydgoszcz, Poland
5. 5Institute of Physics, University of Szczecin, 70-451, Szczecin, Poland