An investigation of electrodeposition and electrocatalysis using carbon fibre microelectrodes
An investigation of electrodeposition and electrocatalysis using carbon fibre microelectrodes
Electrodeposition and electrocatalytic processes of ruthenium on carbon fibre microelectrodes (radius 4 x 10-4 cm, area 5 x 10-7 cm 2) have been investigated. The use of such small electrodes leads to increased variability in the behaviour of metal deposition transients. This variability, amongst ensembles of transients obtained under identical experimental conditions can be modelled to allow access to kinetic information not directly available from conventional treatment of data from single transients or averaged results. The majority of the results reported are for the deposition of ruthenium from the solution of its trichloride in aqueous hydrochloric acid, and concommitant hydrogen evolution. Potentiostatic growth transients for a range of deposition potentials and metal ion concentrations are interpreted in terms of a model invoking Poissonian behaviour of 2-D and 3-D nucleativc processes, followed by deterministic metal growth and hydrogen evolution. Brief examples of the behaviour of other deposition systems are also reported, together with the results of an investigation, carried out in the laboratory of the project's co-sponsors, into the electrochemistry of titanium in aqueous, acidic, fluoride solutions.
University of Southampton
1981
Bayes, Martin William
(1981)
An investigation of electrodeposition and electrocatalysis using carbon fibre microelectrodes.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
Electrodeposition and electrocatalytic processes of ruthenium on carbon fibre microelectrodes (radius 4 x 10-4 cm, area 5 x 10-7 cm 2) have been investigated. The use of such small electrodes leads to increased variability in the behaviour of metal deposition transients. This variability, amongst ensembles of transients obtained under identical experimental conditions can be modelled to allow access to kinetic information not directly available from conventional treatment of data from single transients or averaged results. The majority of the results reported are for the deposition of ruthenium from the solution of its trichloride in aqueous hydrochloric acid, and concommitant hydrogen evolution. Potentiostatic growth transients for a range of deposition potentials and metal ion concentrations are interpreted in terms of a model invoking Poissonian behaviour of 2-D and 3-D nucleativc processes, followed by deterministic metal growth and hydrogen evolution. Brief examples of the behaviour of other deposition systems are also reported, together with the results of an investigation, carried out in the laboratory of the project's co-sponsors, into the electrochemistry of titanium in aqueous, acidic, fluoride solutions.
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Published date: 1981
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Local EPrints ID: 459562
URI: http://eprints.soton.ac.uk/id/eprint/459562
PURE UUID: 01e60bfb-17df-465e-99e5-f276f73f015c
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Date deposited: 04 Jul 2022 17:14
Last modified: 04 Jul 2022 17:14
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Author:
Martin William Bayes
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