Electrodeposition in highly viscous media: Experiments and simulations

Electrolyte viscosity plays an important role in ion transport. Here we study the effects of high viscosity variations in thin-layer electrochemical deposition (ECD) under constant-current conditions through experimental measurements and theoretical modelling. The viscosity was varied through glycer...

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Autores principales: Soba, Alejandro, Gonzalez, Graciela Alicia
Publicado: 2009
Materias:
Electrodeposition
Ion transport
Numerical simulations
Viscosity
Concentration gradients
Constant-current
Current increase
Electrochemical deposition
Electroconvection
Experimental measurements
Ion transports
Micron-sized particles
Particle image velocimetry technique
Theoretical modelling
Theoretical models
Thin layers
Viscosity increase
Viscosity variations
Computer simulation
Flow visualization
Glycerol
Ions
Reduction
Reynolds number
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03043886_v67_n4_p672_Grinbank
http://hdl.handle.net/20.500.12110/paper_03043886_v67_n4_p672_Grinbank
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03043886_v67_n4_p672_Grinbank
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spelling paper:paper_03043886_v67_n4_p672_Grinbank2023-06-08T15:29:25Z Electrodeposition in highly viscous media: Experiments and simulations Soba, Alejandro Gonzalez, Graciela Alicia Electrodeposition Ion transport Numerical simulations Viscosity Concentration gradients Constant-current Current increase Electrochemical deposition Electroconvection Experimental measurements Ion transport Ion transports Micron-sized particles Numerical simulations Particle image velocimetry technique Theoretical modelling Theoretical models Thin layers Viscosity increase Viscosity variations Computer simulation Electrodeposition Flow visualization Glycerol Ions Reduction Reynolds number Viscosity Electrolyte viscosity plays an important role in ion transport. Here we study the effects of high viscosity variations in thin-layer electrochemical deposition (ECD) under constant-current conditions through experimental measurements and theoretical modelling. The viscosity was varied through glycerol and polymer additions and the tracking of convective fronts was performed through the use of optical and particle image velocimetry techniques with micron sized particles. The theoretical model, written in terms of dimensionless quantities, describes diffusive, migratory and convective ion transport in a fluid under constant-current conditions. Experiments reveal that as viscosity increases, convection decreases, while concentration gradients increase. These effects are more pronounced when the current increases. Theory and simulations predict that as viscosity increases, the Poisson and Reynolds numbers decrease whereas the Peclet and electric Grashof numbers increase. Therefore, electroconvection becomes more relevant. © 2009 Elsevier B.V. All rights reserved. Fil:Soba, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:González, G.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03043886_v67_n4_p672_Grinbank http://hdl.handle.net/20.500.12110/paper_03043886_v67_n4_p672_Grinbank
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Electrodeposition
Ion transport
Numerical simulations
Viscosity
Concentration gradients
Constant-current
Current increase
Electrochemical deposition
Electroconvection
Experimental measurements
Ion transport
Ion transports
Micron-sized particles
Numerical simulations
Particle image velocimetry technique
Theoretical modelling
Theoretical models
Thin layers
Viscosity increase
Viscosity variations
Computer simulation
Electrodeposition
Flow visualization
Glycerol
Ions
Reduction
Reynolds number
Viscosity
spellingShingle Electrodeposition
Ion transport
Numerical simulations
Viscosity
Concentration gradients
Constant-current
Current increase
Electrochemical deposition
Electroconvection
Experimental measurements
Ion transport
Ion transports
Micron-sized particles
Numerical simulations
Particle image velocimetry technique
Theoretical modelling
Theoretical models
Thin layers
Viscosity increase
Viscosity variations
Computer simulation
Electrodeposition
Flow visualization
Glycerol
Ions
Reduction
Reynolds number
Viscosity
Soba, Alejandro
Gonzalez, Graciela Alicia
Electrodeposition in highly viscous media: Experiments and simulations
topic_facet Electrodeposition
Ion transport
Numerical simulations
Viscosity
Concentration gradients
Constant-current
Current increase
Electrochemical deposition
Electroconvection
Experimental measurements
Ion transport
Ion transports
Micron-sized particles
Numerical simulations
Particle image velocimetry technique
Theoretical modelling
Theoretical models
Thin layers
Viscosity increase
Viscosity variations
Computer simulation
Electrodeposition
Flow visualization
Glycerol
Ions
Reduction
Reynolds number
Viscosity
description Electrolyte viscosity plays an important role in ion transport. Here we study the effects of high viscosity variations in thin-layer electrochemical deposition (ECD) under constant-current conditions through experimental measurements and theoretical modelling. The viscosity was varied through glycerol and polymer additions and the tracking of convective fronts was performed through the use of optical and particle image velocimetry techniques with micron sized particles. The theoretical model, written in terms of dimensionless quantities, describes diffusive, migratory and convective ion transport in a fluid under constant-current conditions. Experiments reveal that as viscosity increases, convection decreases, while concentration gradients increase. These effects are more pronounced when the current increases. Theory and simulations predict that as viscosity increases, the Poisson and Reynolds numbers decrease whereas the Peclet and electric Grashof numbers increase. Therefore, electroconvection becomes more relevant. © 2009 Elsevier B.V. All rights reserved.
author Soba, Alejandro
Gonzalez, Graciela Alicia
author_facet Soba, Alejandro
Gonzalez, Graciela Alicia
author_sort Soba, Alejandro
title Electrodeposition in highly viscous media: Experiments and simulations
title_short Electrodeposition in highly viscous media: Experiments and simulations
title_full Electrodeposition in highly viscous media: Experiments and simulations
title_fullStr Electrodeposition in highly viscous media: Experiments and simulations
title_full_unstemmed Electrodeposition in highly viscous media: Experiments and simulations
title_sort electrodeposition in highly viscous media: experiments and simulations
publishDate 2009
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03043886_v67_n4_p672_Grinbank
http://hdl.handle.net/20.500.12110/paper_03043886_v67_n4_p672_Grinbank
work_keys_str_mv AT sobaalejandro electrodepositioninhighlyviscousmediaexperimentsandsimulations
AT gonzalezgracielaalicia electrodepositioninhighlyviscousmediaexperimentsandsimulations
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