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An investigation of silver electrodeposition from ionic liquids: influence of atmospheric water uptake on the silver electrodeposition mechanism and film morphology

Basile, Andrew, Bhatt, Anand I., O'Mullane, Anthony P. and Bhargava, Suresh K. 2011, An investigation of silver electrodeposition from ionic liquids: influence of atmospheric water uptake on the silver electrodeposition mechanism and film morphology, Electrochimica acta, vol. 56, no. 7, pp. 2895-2905, doi: 10.1016/j.electacta.2010.12.083.

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Title An investigation of silver electrodeposition from ionic liquids: influence of atmospheric water uptake on the silver electrodeposition mechanism and film morphology
Author(s) Basile, AndrewORCID iD for Basile, Andrew orcid.org/0000-0001-5552-9591
Bhatt, Anand I.
O'Mullane, Anthony P.
Bhargava, Suresh K.
Journal name Electrochimica acta
Volume number 56
Issue number 7
Start page 2895
End page 2905
Total pages 11
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2011-02-28
ISSN 0013-4686
Keyword(s) ionic liquid
silver electrodeposition
nucleation-growth
Summary The electrodeposition of silver from two ionic liquids, 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIm][BF4]) and N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide ([C 4mPyr][TFSI]), and an aqueous KNO3 solution on a glassy carbon electrode was undertaken. It was found by cyclic voltammetry that the electrodeposition of silver proceeds through nucleation-growth kinetics. Analysis of chronoamperometric data indicated that the nucleation-growth mechanism is instantaneous at all potentials in the case of [BMIm][BF 4] and [C4mPyr][TFSI], and instantaneous at low overpotentials tending to progressive at high overpotentials for KNO 3. Significantly, under ambient conditions, the silver electrodeposition mechanism changes to progressive nucleation and growth in [C4mPyr][TFSI], which is attributed to the uptake of atmospheric water in the IL. It was found that these differences in the growth mechanism impact significantly on the morphology of the resultant electrodeposit which is characterised ex situ by scanning electron microscopy and X-ray diffraction.
Language eng
DOI 10.1016/j.electacta.2010.12.083
Field of Research 030102 Electroanalytical Chemistry
030604 Electrochemistry
030301 Chemical Characterisation of Materials
091205 Functional Materials
03 Chemical Sciences
09 Engineering
02 Physical Sciences
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30086657

Document type: Journal Article
Collection: Institute for Frontier Materials
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