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DF: Fachverband Dielektrische Festkörper

DF 17: Focus Session: Alternative energies – Compensation of long- and short-term fluctuations (jointly with DY)

DF 17.5: Vortrag

Donnerstag, 29. März 2012, 16:50–17:10, EB 107

Permittivity, energy density and carrier storage time of film composite capacitors — •Wolfram Münchgesang¹, Sebastian Lemm¹, Martin Diestelhorst¹, Claudia Ehrhardt², Jens Glenneberg³, Alexandra Buchsteiner³, Horst Beige¹, Stefan G. Ebbinghaus², and Hartmut S. Leipner³ — ¹Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle, Germany — ²Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle, Germany — ³Interdisziplinäres Zentrum für Materialwissenschaften, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle, Germany

Thin film composite capacitors are a possible alternative for batteries as energy storage. Their anticipated advantages are short charging and discharging times, a long life cycle, higher energy density and lower temperature dependency. We tested this predicted behaviour of such film composite capacitors under DC and AC conditions. The thin film composites based on nanoparticles of barium titanate which are embedded in a polymeric organic matrix and surface-modified by surfactants.