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Proceedings Paper

Pseudocapacitive and hierarchically ordered porous electrode materials supercapacitors
Author(s): B. Saruhan; Y. Gönüllü; B. Arndt
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Paper Abstract

Commercially available double layer capacitors store energy in an electrostatic field. This forms in the form of a double layer by charged particles arranged on two electrodes consisting mostly of active carbon. Such double layer capacitors exhibit a low energy density, so that components with large capacity according to large electrode areas are required. Our research focuses on the development of new electrode materials to realize the production of electrical energy storage systems with high energy density and high power density. Metal oxide based electrodes increase the energy density and the capacitance by addition of pseudo capacitance to the static capacitance present by the double layer super-capacitor electrodes. The so-called hybrid asymmetric cell capacitors combine both types of energy storage in a single component. In this work, the production routes followed in our laboratories for synthesis of nano-porous and aligned metal oxide electrodes using the electrochemical and sputter deposition as well as anodization methods will be described. Our characterisation studies concentrate on electrodes having redox metal-oxides (e.g. MnOx and WOx) and hierarchically aligned nano-porous Li-doped TiO2-NTs. The material specific and electrochemical properties achieved with these electrodes will be presented.

Paper Details

Date Published: 28 May 2013
PDF: 9 pages
Proc. SPIE 8728, Energy Harvesting and Storage: Materials, Devices, and Applications IV, 872810 (28 May 2013); doi: 10.1117/12.2015275
Show Author Affiliations
B. Saruhan, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Y. Gönüllü, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
B. Arndt, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)


Published in SPIE Proceedings Vol. 8728:
Energy Harvesting and Storage: Materials, Devices, and Applications IV
Nibir K. Dhar; Palani Balaya; Achyut K. Dutta, Editor(s)

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