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Influence of carbonaceous electrodes on capacitance and breakdown voltage for hybrid capacitor

Albina, A. and Taberna, Pierre-Louis and Cambronne, J.P and Simon, Patrice and Flahaut, Emmanuel and Lebey, Thierry Influence of carbonaceous electrodes on capacitance and breakdown voltage for hybrid capacitor. (2007) Microelectronics Journal, vol. 38 (n° 4-5). pp. 642-648. ISSN 0026-2692

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Official URL: http://dx.doi.org/10.1016/j.mejo.2007.02.008

Abstract

This paper presents a new type of capacitor and deals with a hybrid approach where the advantages of two systems, dielectric capacitors and the ultracapacitor are combined. The objective is to increase the capacitance and the energy storage capability, while or at least preserving or decreasing the volume of the passive components. In this aim, the surface area and structural properties of ultracapacitor electrodes and the high dielectric strength of a polymer material are associated. The surface roughness of the carbonbased electrodes, namely (activated carbon—AC, and carbon nanotubes—CNTs), has a good impact on the capacitance. However, the surface roughness also depends on the composition of carbonaceous materials and so does the capacitance. Moreover, the choice of the dielectric material is the key parameter. The better the impregnation of the roughness is, the better is the increase of the capacitance. Since the final objective is to improve the electrical energy stored by the capacitor, the effect of surface roughness on the breakdown voltage is also evaluated.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Microelectronics Journal website : http://www.sciencedirect.com/science/journal/00262692
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By:Nihad Lahdifi

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