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The effect of pre-analysis washing on the surface film of graphite electrodes

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Somerville, Limhi, Bareño, J., Jennings, P. A. (Paul A.), McGordon, Andrew, Lyness, Christopher and Bloom, I. (2016) The effect of pre-analysis washing on the surface film of graphite electrodes. Electrochimica Acta, 206 . pp. 70-76. doi:10.1016/j.electacta.2016.04.133

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Official URL: http://dx.doi.org/10.1016/j.electacta.2016.04.133

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Abstract

Electrodes are routinely washed to remove electrolyte deposits, salt, and high boiling point solvents prior to analysis with surface-sensitive techniques. The effect of washing on the surface films of graphite electrodes from LiCoO2/graphite cells, which contained varying amounts of vinylene carbonate (VC), was investigated by comparing the microstructure and chemical composition. We confirmed that there are two different kinds of films on the surface of the electrodes: one at low and one at high VC content concentration. Far from being limited to remove extraneous salt deposits from the surface of the sample, DMC washing was found to completely remove one and to affect the composition of deeper strata in the other.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Graphene, Lithium ion batteries
Journal or Publication Title: Electrochimica Acta
Publisher: Pergamon
ISSN: 0013-4686
Official Date: 10 July 2016
Dates:
DateEvent
10 July 2016Published
25 April 2016Available
23 April 2016Accepted
2 April 2016Submitted
Volume: 206
Number of Pages: 7
Page Range: pp. 70-76
DOI: 10.1016/j.electacta.2016.04.133
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Engineering and Physical Sciences Research Council (EPSRC), Jaguar PLC, United States. Department of Energy
Grant number: DE-AC02- 06CH11357 (DOE)
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