Time-humidity superposition principle

The results in Fig. 22 show that the RH-dependent spectra of a given PEC, can, indeed, be superimposed to a master curve. The agreement between the curves is excellent in all parts of the spectra except at low frequencies, where electrode polarization effects dominate however, these do not describe material properties. We can therefore claim that for the presented polyelectrolyte materials there is a time-humidity superposition-principle (THSP) in analogy to the well-established TTSP. Moreover, the special case of Summerfield-type scaling is fulhUed. The same holds true for other investigated PEC compositions not presented here. 

Cramer C, De S, Schonhoff M (2011) Time-humidity-superposition principle in electrical conductivity spectra of ion-conducting polymers. Phys Rev Lett 107 028301... 

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