We notice that the citation errors happened due to unfortunate misprints, not due to our misinterpretation of the experimental results of works  (Alam et al., Electrochem. Commun. 9 (2007) 2370) and  (Lockett et al., J. Phys. Chem. C 112, (2008) 7486). In the caption to Fig. 1 and in the line 90 we actually meant to cite the results of work  (Lockett et al., J. Phys. Chem. C 112, (2008) 7486), not Ref. , and we believe that this should be clear from the other parts of our communication. We regret that these misprints have been published.
- ionic liquids