Gelled ionic liquid sodium ion conductors for sodium batteries

Mohd Noor, Siti Aminah, Yoon, Hyungook, Forsyth, Maria and Macfarlane, Douglas R. 2015, Gelled ionic liquid sodium ion conductors for sodium batteries, Electrochimica acta, vol. 169, pp. 376-381, doi: 10.1016/j.electacta.2015.03.024.

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Title Gelled ionic liquid sodium ion conductors for sodium batteries
Author(s) Mohd Noor, Siti Aminah
Yoon, Hyungook
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Macfarlane, Douglas R.
Journal name Electrochimica acta
Volume number 169
Start page 376
End page 381
Total pages 6
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-07-01
ISSN 0013-4686
1873-3859
Keyword(s) gelled electrolytes
ionic liquid
sodium ion conductors
Science & Technology
Physical Sciences
Electrochemistry
LITHIUM-METAL BATTERIES
ORGANIC-SOLVENTS
ELECTROLYTES
CONDUCTIVITY
BEHAVIOR
SALTS
LI
Summary Owing to the unique properties of certain Ionic liquids (ILs) as safe and green solvents, as well as the potential of sodium as an alternative to lithium as charge carriers, we investigate gel sodium electrolytes as safe, low cost and high performance materials with sufficient mechanical properties for application in sodium battery technologies. We investigate the effect of formation of two types of gel electrolytes on the properties of IL electrolytes known to support Na/Na+ electrochemistry. The ionic conductivity is only slightly decreased by 0.0005 and 0.0002 S cm-1 in the case of 0.3 and 0.5 M NaNTf2 systems respectively as the physical properties transition from liquid to gel. We observed facile plating and stripping of Na metal around 0 V vs. Na/Na+ through the cyclic voltammetry. A wide-temperature range of the gelled IL state, of more than 100 K around room temperature, is achieved in the case of 0.3 and 0.5 M NaNTf2. We conclude that the formation of a gel does not significantly affect the liquid-like ion dynamics in these materials, as further evidenced by DSC and FTIR analysis.
Language eng
DOI 10.1016/j.electacta.2015.03.024
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 ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30078484

Document type: Journal Article
Collection: Institute for Frontier Materials
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