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Spark plasma sintered carbon electrodes for electrical double layer capacitor applications

Daffos, Barbara and Chevallier, Geoffroy and Estournès, Claude and Simon, Patrice Spark plasma sintered carbon electrodes for electrical double layer capacitor applications. (2011) Journal of Power Sources, vol. 196 (n° 3). pp. 1620-1625. ISSN 0378-7753

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Official URL: http://dx.doi.org/10.1016/j.jpowsour.2010.08.098

Abstract

The spark plasma sintering (SPS) is an emerging process for shaping any type of materials (metals, ceramic, polymers and their composites). The advantage of such a process is to prepare densified ceramic materials in a very short time, while keeping the materials internal porosity. In the present work, we have used the SPS technique to prepare activated carbon-based electrodes for Electrochemical Double Layer Capacitor applications (EDLC). Self-supported 600 and 300µm-thick electrodes were prepared and characterized using of Electrochemical Impedance Spectroscopy and galvanostatic cycling in a non-aqueous 1.5MNEt4BF4 in acetonitrile electrolyte. Electrochemical performance of these sintered electrodes were found to be in the same range – or even slightly better – than the conventional tape-casted activated carbon electrodes. Although organic liquid electrolyte was used to characterize the electrochemical performance of the sintered electrodes, these results demonstrate that the SPS technique could be worth of interest in the ultimate goal of designing solid-state supercapacitors.

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 Journal of Power Sources website: http://www.sciencedirect.com/science/article/pii/S0378775310015831
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By: Denis Faragou
Deposited On:15 May 2012 16:35

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