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Ionic liquids and organic ionic plastic crystals utilizing small phosphonium cations

Armel, Vanessa, Velayutham, David, Sun, Jiazeng, Howlett, Patrick C., Forsyth, Maria, MacFarlane, Douglas R. and Pringle, Jennifer M. 2011, Ionic liquids and organic ionic plastic crystals utilizing small phosphonium cations, Journal of materials chemistry, vol. 21, no. 21, pp. 7640-7650.

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Title Ionic liquids and organic ionic plastic crystals utilizing small phosphonium cations
Author(s) Armel, Vanessa
Velayutham, David
Sun, Jiazeng
Howlett, Patrick C.
Forsyth, Maria
MacFarlane, Douglas R.
Pringle, Jennifer M.
Journal name Journal of materials chemistry
Volume number 21
Issue number 21
Start page 7640
End page 7650
Total pages 11
Publisher Royal Society of Chemistry
Place of publication London, England
Publication date 2011
ISSN 0959-9428
1364-5501
Summary The development of new liquid and solid state electrolytes is paramount for the advancement of electrochemical devices such as lithium batteries and solar cells. Ionic liquids have shown great promise in both these applications. Here we demonstrate the use of phosphonium cations with small alkyl chain substituents, in combination with a range of different anions, to produce a variety of new halide free ionic liquids that are fluid, conductive and with sufficient thermal stability for a range of electrochemical applications. Walden plot analysis of the new phosphonium ionic liquids shows that these can be classed as "good" ionic liquids, with low degrees of ion pairing and/or aggregation, and the lithium deposition and stripping from one of these ionic liquids has been demonstrated. Furthermore, for the first time phosphonium cations have been used to form a range of organic ionic plastic crystals. These materials can show significant ionic conductivity in the solid state and thus are of great interest as potential solid-state electrolyte materials.
Language eng
Field of Research 091205 Functional Materials
030399 Macromolecular and Materials Chemistry not elsewhere classified
030604 Electrochemistry
Socio Economic Objective 850504 Solar-Photovoltaic Energy
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, The Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30044229

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.