Investigating non-fluorinated anions for sodium battery electrolytes based on ionic liquids

Basile, A., Yoon, H., MacFarlane, D. R., Forsyth, M. and Howlett, P. C. 2016, Investigating non-fluorinated anions for sodium battery electrolytes based on ionic liquids, Electrochemistry communications, vol. 71, pp. 48-51, doi: 10.1016/j.elecom.2016.07.014.

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Title Investigating non-fluorinated anions for sodium battery electrolytes based on ionic liquids
Author(s) Basile, A.ORCID iD for Basile, A.
Yoon, H.
MacFarlane, D. R.
Forsyth, M.ORCID iD for Forsyth, M.
Howlett, P. C.ORCID iD for Howlett, P. C.
Journal name Electrochemistry communications
Volume number 71
Start page 48
End page 51
Total pages 4
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-10
ISSN 1388-2481
Keyword(s) Science & Technology
Physical Sciences
Summary In order for sodium batteries to become a safe, lower cost option for large scale energy storage, minimising the price of all components is important. We report here on the application of a pyrrolidinium room temperature ionic liquid comprising the dicyanamide anion as a successful electrolyte system for sodium metal batteries that does not contain expensive fluorinated species. The effects of plating/stripping of sodium from Na metal electrodes has been investigated in a symmetrical Na | electrolyte | Na configuration at a current density of 10 μA cm− 2. Comparisons are drawn to reference organic electrolytes comprising propylene carbonate-fluoroethylene carbonate. Residual water molecules in the ionic liquid electrolyte are observed to have a significant effect upon the surface film and subsequent favourable plating/stripping behaviour of symmetrical cells and this is explored in detail. An increase of the moisture content from 90 ppm to 400 ppm impedes both electrodeposition and electrodissolution of the Na+/Na. This is investigated at Ni electrodes using cyclic voltammetry at different Na+-salt concentrations to further understand the mechanism.
Language eng
DOI 10.1016/j.elecom.2016.07.014
Indigenous content off
Field of Research 091205 Functional Materials
030604 Electrochemistry
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 DP130101652
Copyright notice ©2016, Elsevier
Use Rights Creative Commons Attribution Non-Commercial No-Derivatives licence
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Document type: Journal Article
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