Effect of water and oxygen traces on the cathodic stability of N-alkyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide
2008 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 0019-4686, Vol. 53, no 22, 6397-6401 p.Article in journal (Refereed) Published
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 (PYR1A') cations and bis(trifluoromethanesulfonyl)imide (TFSI-) anion, is reported. The extensive investigation performed by linear sweep voltarnmetry (LSV) and cyclic voltarnmetry (CV) indicates that the TFSl- 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 voltarnmetry curves before the massive cation decomposition took place at very low potentials.
Place, publisher, year, edition, pages
2008. Vol. 53, no 22, 6397-6401 p.
pyrrolidinium, TFSI, N(Tf)(2), ionic liquid, cathodic stability, temperature ionic liquids, acetonitrile solutions, organic-solvents, molten-salt, lithium, impurities, electrochemistry, electrolytes, chloride, systems
IdentifiersURN: urn:nbn:se:kth:diva-17732DOI: 10.1016/j.electacta.2008.04.058ISI: 000258009800015ScopusID: 2-s2.0-54249105423OAI: oai:DiVA.org:kth-17732DiVA: diva2:335777
QC 201005252010-08-052010-08-052010-09-06Bibliographically approved