On the physical interpretation of constant phase elements
Abouzari MRS, Berkemeier F, Schmitz G, Wilmer D
Forschungsartikel (Zeitschrift)Zusammenfassung
Complex impedance spectra of ion-conducting lithium borate network glasses are used to study the deformed shape of impedance semicircles which are usually described by a parallel circuit of an ohmic resistor and a phenomenological Constant Phase Element (CPE). Based on the Concept of Mismatch and Relaxation (CMR) of Funke et al. which provides a theoretical treatment of the ion dynamics in disordered materials, a quantitative description of the experimental impedance spectra is presented. It takes into account the contribution of the static glass network by introducing an additional capacitor, and provides both, a physical interpretation of the CPE and an easy-to-handle mathematical formula to calculate the 'real' capacity of a CPE. (C) 2009 Elsevier B.V. All rights reserved.
Details zur Publikation
Autor*innen der Universität Münster
| Berkemeier, Frank | |
| Schmitz, Guido |
Promotionen, aus denen die Publikation resultiert
| Ionenleitende Borat- und Silikatglasschichten Strukturelle und Elektrische Charakterisierung mit Hilfe von TEM und Impedanzspektroskopie Promovend*in: Berkemeier, Frank | Betreuer*innen: Schmitz, Guido Zeitraum: bis 14.11.2007 Promotionsverfahren erfolgt(e) an: Promotionsverfahren an der Universität Münster |