1. Fundamental Technology Laboratory, Research and Development Center, The Kansai Electric Power Company, Inc., Amagasaki, Hyogo 661-0974, Japan
2. Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, SK-84215 Bratislava, Slovakia
3. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravska cesta 9, SK-84236 Bratislava, Slovakia