Berlin 2012 – scientific programme
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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: Talk
Thursday, March 29, 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.