On the role of cyclic unsaturated additives on the behaviour of lithium metal electrodes in ionic liquid electrolytes

Lane, George H., Best, Adam S., MacFarlane, Douglas R., Forsyth, Maria and Hollenkamp, Anthony F. 2010, On the role of cyclic unsaturated additives on the behaviour of lithium metal electrodes in ionic liquid electrolytes, Electrochimica acta, vol. 55, no. 6, pp. 2210-2215.

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Title On the role of cyclic unsaturated additives on the behaviour of lithium metal electrodes in ionic liquid electrolytes
Author(s) Lane, George H.
Best, Adam S.
MacFarlane, Douglas R.
Forsyth, Maria
Hollenkamp, Anthony F.
Journal name Electrochimica acta
Volume number 55
Issue number 6
Start page 2210
End page 2215
Total pages 6
Publisher Elsevier Science Pub. Co.
Place of publication New York, N.Y.
Publication date 2010-02-15
ISSN 0013-4686
1873-3859
Keyword(s) vinylenetrithiocarbonate
hexafluorocyclopentene
vinylene carbonate
ionic liquid
lithium metal
Summary Three cyclic vinyl based additives, based respectively on oxygen, sulphur and fluorine, are tested for their ability to improve the cycling of lithium in a hostile ionic liquid medium. Oxygen based vinylene carbonate is found to offer the best protection of the lithium metal whilst allowing very consistent lithium cycling to occur. The vinylene carbonate based system under study is, however, imperfect. Lithium metal is deposited in a dendritic morphology, and vinylene carbonate is rapidly consumed during lithium cycling if it is present in a small quantity. Our results suggest that ionic liquid systems critically relying on a small amount of additive to protect a lithium electrode are not viable for long cycle life secondary batteries. It is suggested that an ionic liquid which itself is lithium metal compatible be used instead.
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 ©2009, Elsevier Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30031051

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