We In Fig. (a) we have added the curve 0.39 • σ N E . It describes the simulated ionic con-ductivities very well. Thus we may conclude that for the whole range of analyzed salt concentrations the ratio of the ionic conductivity and the N-E conductivity, i.e. σ/σ N E , is approximately constant. Indeed, as shown in the experimentally determined molar conductivity σ/ρ s display an exponential dependence on salt concentration in full agreement with the present MD results.