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Solvent effect on the ion adsorption from ionic liquid electrolyte into sub-nanometer carbon pores

Lin, Rongying and Huang, Peihua and Segalini, Julie and Largeot, Céline and Taberna, Pierre-Louis and Chmiola, John and Gogotsi, Yury and Simon, Patrice Solvent effect on the ion adsorption from ionic liquid electrolyte into sub-nanometer carbon pores. (2009) Electrochimica Acta, vol. 54 (n° 27). pp. 7025-7032 . ISSN 0013-4686

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Official URL: http://dx.doi.org/10.1016/j.electacta.2009.07.015

Abstract

This paper presents the results from the investigation of the influence of ion size on the capacitance behaviour of TiC-derived carbon (CDC) powders in the ethyl-methylimmidazolium-bis(trifluoromethane-sulfonyl)imide ionic liquid (EMI, TFSI) used as neat electrolyte at 60°C or as salt dissolved in acetonitrile and tested at room temperature. These studies were carried out with the assembly of conventional 3-electrode electrochemical cells as well as using the Cavity-MicroElectrode (CME) technique. The issues regarding the extents of desolvation of the electrolyte ions when adsorbed in the pores of the CDCs under applied potential were studied, the CME technique was found to be particularly efficient in the deduction of the effective ion size under solvated conditions.

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 Electrochimica Acta website : http://www.sciencedirect.com/science/journal/00134686
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
Other partners > Drexel University (USA)
Laboratory name:
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Deposited By:Nihad Lahdifi

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