Metallic electrolyte composites in the framework of the brick-layer model
- It is well known that the already large dielectric constants of some electrolytes like BaTiO₃ can be enhanced further by adding metallic (e.g. Ni, Cu or Ag) nanoparticles. The enhancement can be quite large, a factor of more than 1000 is possible. The consequences for the properties will be discussed in the present paper applying a brick-layer model (BLM) for calculating dc-resistivities of thin layers and a modified one (PBLM) that includes percolation for calculating dielectric properties of these materials. The PBLM results in an at least qualitative description and understanding of the physical phenomena: This model gives an explanation for the steep increase of the dielectric constant below the percolation threshold and why this increase is connected to a dramatic decrease of the breakdown voltage as well as the ability of storing electrical energy. We conclude that metallic electrolyte composites like BaTiO₃ are not appropriate for energy storage.
| Verfasserangaben: | H. Lustfeld, C. Pithan, Martin Reißel |
|---|---|
| DOI: | https://doi.org/10.1016/j.jeurceramsoc.2011.10.017 |
| ISSN: | 0955-2219 |
| Titel des übergeordneten Werkes (Englisch): | Journal of the European Ceramic Society |
| Verlag: | Elsevier |
| Verlagsort: | Amsterdam |
| Dokumentart: | Wissenschaftlicher Artikel |
| Sprache: | Englisch |
| Erscheinungsjahr: | 2012 |
| Datum der Publikation (Server): | 18.12.2012 |
| Jahrgang: | 32 |
| Ausgabe / Heft: | 4 |
| Erste Seite: | 859 |
| Letzte Seite: | 864 |
| Link: | https://doi.org/10.1016/j.jeurceramsoc.2011.10.017 |
| Zugriffsart: | campus |
| Fachbereiche und Einrichtungen: | FH Aachen / Fachbereich Medizintechnik und Technomathematik |
| collections: | Verlag / Elsevier |
