title: Time-humidity-superposition principle in electrical conductivity spectra of ion-conducting polymers.
abstract: We analyze the scaling properties of the ac conductivity spectra of ion-conducting polyelectrolyte complexes of different compositions. Spectra were taken at ambient temperature but at different relative humidities. For the first time, we report on a scaling principle for conductivity spectra termed "time-humidity-superposition principle" in analogy with the well-known time-temperature-superposition principle. This model-free scaling holds for different materials over several decades in frequency. It implies that the hydration is activating ion motion over short and long distances in a similar general way, a concept so far only established for thermal energy.
authors.affiliation: Institute of Physical Chemistry, University of Muenster, Corrensstraße 28/30, 48149 Münster, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Cramer
authors.forename: S
authors.initials: S
authors.lastname: De
authors.forename: M
authors.initials: M
authors.lastname: Schönhoff