OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Single Electrode Capacitances of Porous Carbons in Neat Ionic Liquid Electrolyte at 100 C: A Combined Experimental and Modeling Approach

Péan, Clarisse and Daffos, Barbara and Merlet, Céline and Rotenberg, Benjamin and Taberna, Pierre-Louis and Simon, Patrice and Salanne, Mathieu Single Electrode Capacitances of Porous Carbons in Neat Ionic Liquid Electrolyte at 100 C: A Combined Experimental and Modeling Approach. (2015) Journal of The Electrochemical Society (JES), 162 (5). A5091-A5095. ISSN 0013-4651

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1MB

Official URL: http://dx.doi.org/10.1149/2.0151505jes

Abstract

Supercapacitors are promising devices for energy storage. Being able to measure and predict their performances is a key step in order to optimize them. In the present study, we propose an original methodology to calculate the capacitance of a single nanoporous carbon electrode in contact with an ionic liquid, using molecular dynamics simulations. The results are compared to experimental electrochemical measurements conducted on the same systems at high temperature (close to 100◦C). The two approaches are in qualitative agreement and show that, in the case of a butyl-methylimidazolium hexafluorophosphate electrolyte combined with a carbide-derived carbon with an average pore size of 0.9 nm, the positive electrode capacitance is fairly larger than the negative one.

Item Type:Article
Additional Information:Thanks to Electrochemical Society editor. The definitive version is available at http://jes.ecsdl.org/
HAL Id:hal-01446690
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
Funders:
JADE (CINES, French National HPC) - European Research Council
Statistics:download
Deposited By: cirimat webmestre
Deposited On:26 Jan 2017 10:26

Repository Staff Only: item control page