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Effect of water and oxygen traces on the cathodic stability of N-alkyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide

TitoloEffect of water and oxygen traces on the cathodic stability of N-alkyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2008
AutoriRandström, S., Montanino M., Appetecchi Giovanni Battista, Lagergren C., Moreno A., and Passerini S.
RivistaElectrochimica Acta
Volume53
Paginazione6397-6401
ISSN00134686
Parole chiaveAlkylation, Bis(trifluoromethanesulfonyl)imide, Cathodic linear sweep voltammetries, Cathodic stability, Cyclic voltammetry, Effect of waters, Electrochemical applications, Electrochemical properties, Experimental conditions, Experiments, Hydrophobic, Ionic liquids, Ionization of liquids, Ions, Linear sweep voltammetries, Liquids, N(Tf<sub>2</sub>), Negative ions, Oxygen, Positive ions, Pyrrolidinium, TFSI, Voltammetry
Abstract

Although research in the field of ionic liquids for electrochemical applications has led to a deeper knowledge in their electrochemical properties, doubts in the interpretation of the experimental results are still encountered in the literature due to the poor control of the experimental conditions and/or to the limited number of experiments conducted. In this work, the effect of water and oxygen traces on the cathodic stability window of hydrophobic, air-stable ionic liquids composed of N-alkyl-N-methylpyrrolidinium (PYR 1A +) cations and bis(trifluoromethanesulfonyl)imide (TFSI-) anion, is reported. The extensive investigation performed by linear sweep voltammetry (LSV) and cyclic voltammetry (CV) indicates that the TFSI- anion is cathodically stable if the ionic liquid is pure and dry. The N-alkyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide ionic liquids investigated showed featureless cathodic linear sweep voltammetry curves before the massive cation decomposition took place at very low potentials. © 2008 Elsevier Ltd. All rights reserved.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-54249105423&doi=10.1016%2fj.electacta.2008.04.058&partnerID=40&md5=a7fee840befcb36e94143b37ce3b65ad
DOI10.1016/j.electacta.2008.04.058
Citation KeyRandström20086397