Physicochemical characterization of a new family of small alkyl phosphonium imide ionic liquids

Hilder, M., Girard, G. M. A., Whitbread, K., Zavorine, S., Moser, M., Nucciarone, D., Forsyth, M., MacFarlane, D. R. and Howlett, P. C. 2016, Physicochemical characterization of a new family of small alkyl phosphonium imide ionic liquids, Electrochimica acta, vol. 202, pp. 100-109, doi: 10.1016/j.electacta.2016.03.130.

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Title Physicochemical characterization of a new family of small alkyl phosphonium imide ionic liquids
Author(s) Hilder, M.ORCID iD for Hilder, M.
Girard, G. M. A.
Whitbread, K.
Zavorine, S.
Moser, M.
Nucciarone, D.
Forsyth, M.ORCID iD for Forsyth, M.
MacFarlane, D. R.
Howlett, P. C.ORCID iD for Howlett, P. C.
Journal name Electrochimica acta
Volume number 202
Start page 100
End page 109
Total pages 10
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-06-01
ISSN 0013-4686
Keyword(s) Science & Technology
Physical Sciences
ionic liquid
Summary Despite their promising properties, phosphonium based ionic liquids have attracted little attention as compared to their nitrogen-based cation counterparts. This study focuses on the properties of a family of small phosphonium imide ionic liquids, as well as the effect of lithium salt addition to these. The 6 ionic liquids were either alkyl, cyclic or nitrile functionalised phoshonium cations with bis(trifluoromethanesulfonyl)imide, NTf2, or bis(fluorosulfonyl)imide (FSI) as anion. Amongst the properties investigated were ionic conductivity, viscosity, thermal behaviour, electrochemical stability and the reversibility of electrochemical lithium cycling. All ionic liquids showed very promising properties e.g. having low transition temperatures, high electrochemical stabilities, low viscosities and high conductivities. Particularly the trimethyl phosphonium ionic liquids showed some of the highest conductivities reported amongst phosphonium ionic liquids generally. The combination of electrochemical stability, high conductivity and reversible lithium cycling makes them promising systems for energy storage devices such as lithium batteries.
Language eng
DOI 10.1016/j.electacta.2016.03.130
Field of Research 091205 Functional Materials
030604 Electrochemistry
03 Chemical Sciences
09 Engineering
02 Physical Sciences
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID LP120200181
Copyright notice ©2016, Elsevier
Persistent URL

Document type: Journal Article
Collections: Institute for Frontier Materials
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