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Electrochemistry at negative potentials in Bis(trifluoromethanesulfonyl)amide ionic liquids

Howlett, Patrick C., Izgorodina, Ekaterina I., Forsyth, Maria and MacFarlane, Douglas R. 2006, Electrochemistry at negative potentials in Bis(trifluoromethanesulfonyl)amide ionic liquids, Zeitschrift für Physikalische Chemie, vol. 220, no. 10-11, pp. 1483-1498.


Title Electrochemistry at negative potentials in Bis(trifluoromethanesulfonyl)amide ionic liquids
Author(s) Howlett, Patrick C.
Izgorodina, Ekaterina I.
Forsyth, Maria
MacFarlane, Douglas R.
Journal name Zeitschrift für Physikalische Chemie
Volume number 220
Issue number 10-11
Start page 1483
End page 1498
Publisher Oldenbourg Wissenschaftsverlag GmbH
Place of publication Munich, Germany
Publication date 2006
ISSN 0942-9352
Keyword(s) reduction
decomposition
passivation
bistriflamide
TFSA
Summary The bis(trifluoromethanesulfonyl)amide (TFSA) anion is widely studied as an ionic liquid (IL) forming anion which imparts many useful properties, notably electrochemical stability. Here we present electrochemical and spectroscopic evidence indicating that reductive decomposition of the bis(trifluoromethanesulfonyl)amide (TFSA) anion begins at ~ −2.0 V vs. Fc+/Fc, well before the reported cathodic limit for many of these ILs. These processes are shown to be dependent upon the electrode substrate and are influenced by the water content of the IL. Supporting ab initio calculations are presented which suggest a possible mechanism for the anion decomposition. The products appear to passivate the electrode surface and the implications of this behaviour are discussed.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30040676

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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