The electrochemistry of lithium in ionic liquid/organic diluent mixtures

Lane, George H., Best, Adam S., MacFarlane, Douglas R., Forsyth, Maria, Bayley, Paul M. and Hollenkamp, Anthony F. 2010, The electrochemistry of lithium in ionic liquid/organic diluent mixtures, Electrochimica acta, vol. 55, no. 28, pp. 8947-8952.

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Title The electrochemistry of lithium in ionic liquid/organic diluent mixtures
Author(s) Lane, George H.
Best, Adam S.
MacFarlane, Douglas R.
Forsyth, Maria
Bayley, Paul M.
Hollenkamp, Anthony F.
Journal name Electrochimica acta
Volume number 55
Issue number 28
Start page 8947
End page 8952
Publisher Elsevier Science Pub. Co.
Place of publication New York, N.Y.
Publication date 2010-12-01
ISSN 0013-4686
1873-3859
Keyword(s) Ionic liquid
diluent
lithium diffusion
lithium metal
battery electrolyte
Summary The electrochemistry of lithium is investigated in a number of electrolytes that consist of a lithium salt dissolved in a combined ionic liquid-organic diluent medium. We find that ethylene carbonate and vinylene carbonate improve electrochemical behaviour, while toluene and tetrahydrofuran are less promising.We also present insights into the electrode passivation caused by these diluents in an ionic liquid electrolyte during lithium cycling. We observe that during lithium cycling those electrolytes with carbonate based diluents are the most able to utilise their previously reported improved lithium ion diffusivities. Conversely, tetrahydrofuran, the most promising diluent of those studied in terms of its known ability to increase lithium ion diffusivity is found not to be as advantageous as a diluent. It appears that the poor electrochemical interfacial properties of the tetrahydrofuran electrolyte prevented the realisation of the benefits of the high solution lithium ion diffusivity.
Language eng
Field of Research 030604 Electrochemistry
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, Elsevier Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30031084

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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