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A combined scanning electron micrograph and electrochemical study of the effect of chemical interaction on the cyclability of lithium electrodes in an ionic liquid electrolyte

Basile, Andrew, Bhatt, Anand I. and O'Mullane, Anthony P. 2012, A combined scanning electron micrograph and electrochemical study of the effect of chemical interaction on the cyclability of lithium electrodes in an ionic liquid electrolyte, Australian journal of chemistry, vol. 65, no. 11, pp. 1534-1541, doi: 10.1071/CH12334.

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Title A combined scanning electron micrograph and electrochemical study of the effect of chemical interaction on the cyclability of lithium electrodes in an ionic liquid electrolyte
Author(s) Basile, AndrewORCID iD for Basile, Andrew orcid.org/0000-0001-5552-9591
Bhatt, Anand I.
O'Mullane, Anthony P.
Journal name Australian journal of chemistry
Volume number 65
Issue number 11
Start page 1534
End page 1541
Total pages 8
Publisher CSIRO Publishing
Place of publication Clayton, Vic.
Publication date 2012-11-28
ISSN 0004-9425
Summary The effect of storage time on the cyclability of lithium electrodes in an ionic liquid electrolyte, namely 0.5m LiBF4 in N-methyl-N-propyl pyrrolidinium bis(fluorosulfonyl)imide, [C3mpyr+][FSI-], was investigated. A chemical interaction was observed which is time dependent and results in a morphology change of the Li surface due to build up of passivation products over a 12-day period. The formation of this layer significantly impacts on the Li electrode resistance before cycling and the charging/discharging process for symmetrical Li|0.5m LiBF4 in [C3mpyr+][FSI-]|Li coin cells. Indeed it was found that introducing a rest period between cycling, and thereby allowing the chemical interaction between the Li electrode and electrolyte to take place, also impacted on the charging/discharging process. For all Li surface treatments the electrode resistance decreased after cycling and was due to significant structural rearrangement of the surface layer. These results suggest that careful electrode pretreatment in a real battery system will be required before operation.
Language eng
DOI 10.1071/CH12334
Field of Research 030299 Inorganic Chemistry not elsewhere classified
030604 Electrochemistry
03 Chemical Sciences
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2012, CSIRO
Persistent URL http://hdl.handle.net/10536/DRO/DU:30086660

Document type: Journal Article
Collection: Institute for Frontier Materials
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