Ion transport in thin cell electrodeposition: Modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions

Electrochemical deposition (ECD) and spatially coupled bipolar electrochemistry (SCBE) experiments in thin-layer cells are known to produce complex ion transport patterns concomitantly with the growth of dendrite-like structures. Here we present a macroscopic model of ECD and SCBE with a three-ion e...

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Autores principales: Marshall, G., Molina, F.V., Soba, A.
Formato: JOUR
Materias:
Electrodeposition
Ion transport
Migration
Numerical simulations
Thin cells
Charge transfer
Computer simulation
Electric currents
Electric fields
Electric potential
Electrolytes
Morphology
Positive ions
Spatially coupled bipolar electrochemistry (SCBE)
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00134686_v50_n16-17_p3436_Marshall
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00134686_v50_n16-17_p3436_Marshall2023-10-03T14:10:59Z Ion transport in thin cell electrodeposition: Modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions Marshall, G. Molina, F.V. Soba, A. Electrodeposition Ion transport Migration Numerical simulations Thin cells Charge transfer Computer simulation Electric currents Electric fields Electric potential Electrolytes Morphology Positive ions Ion transport Migration Spatially coupled bipolar electrochemistry (SCBE) Thin cells Electrodeposition Electrochemical deposition (ECD) and spatially coupled bipolar electrochemistry (SCBE) experiments in thin-layer cells are known to produce complex ion transport patterns concomitantly with the growth of dendrite-like structures. Here we present a macroscopic model of ECD and SCBE with a three-ion electrolyte in conditions of dense branched morphology. The model describes ion transport and deposit growth through the one-dimensional Nernst-Planck equations for ion transport, the Poisson equation for the electric field and, for ECD, a growth law for deposit evolution. We present numerical simulations for typical electrochemical deposition experiments: dense branched morphology in ECD and the incubation period in SCBE. In ECD the model predicts cation, anion and proton concentration profiles, electric field variations and deposit growth speed, that are in qualitative agreement with experiments; the predicted evolution and collision of the deposit and proton fronts reveal a time scaling close to those observed in experiments. In SCBE, the model predicts that the inverse of the incubation time scales linearly with the applied voltage. Such behaviour was observed in experiments. © 2004 Elsevier Ltd. All rights reserved. Fil:Molina, F.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Soba, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00134686_v50_n16-17_p3436_Marshall
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
Migration
Numerical simulations
Thin cells
Charge transfer
Computer simulation
Electric currents
Electric fields
Electric potential
Electrolytes
Morphology
Positive ions
Ion transport
Migration
Spatially coupled bipolar electrochemistry (SCBE)
Thin cells
Electrodeposition
spellingShingle Electrodeposition
Ion transport
Migration
Numerical simulations
Thin cells
Charge transfer
Computer simulation
Electric currents
Electric fields
Electric potential
Electrolytes
Morphology
Positive ions
Ion transport
Migration
Spatially coupled bipolar electrochemistry (SCBE)
Thin cells
Electrodeposition
Marshall, G.
Molina, F.V.
Soba, A.
Ion transport in thin cell electrodeposition: Modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions
topic_facet Electrodeposition
Ion transport
Migration
Numerical simulations
Thin cells
Charge transfer
Computer simulation
Electric currents
Electric fields
Electric potential
Electrolytes
Morphology
Positive ions
Ion transport
Migration
Spatially coupled bipolar electrochemistry (SCBE)
Thin cells
Electrodeposition
description Electrochemical deposition (ECD) and spatially coupled bipolar electrochemistry (SCBE) experiments in thin-layer cells are known to produce complex ion transport patterns concomitantly with the growth of dendrite-like structures. Here we present a macroscopic model of ECD and SCBE with a three-ion electrolyte in conditions of dense branched morphology. The model describes ion transport and deposit growth through the one-dimensional Nernst-Planck equations for ion transport, the Poisson equation for the electric field and, for ECD, a growth law for deposit evolution. We present numerical simulations for typical electrochemical deposition experiments: dense branched morphology in ECD and the incubation period in SCBE. In ECD the model predicts cation, anion and proton concentration profiles, electric field variations and deposit growth speed, that are in qualitative agreement with experiments; the predicted evolution and collision of the deposit and proton fronts reveal a time scaling close to those observed in experiments. In SCBE, the model predicts that the inverse of the incubation time scales linearly with the applied voltage. Such behaviour was observed in experiments. © 2004 Elsevier Ltd. All rights reserved.
format JOUR
author Marshall, G.
Molina, F.V.
Soba, A.
author_facet Marshall, G.
Molina, F.V.
Soba, A.
author_sort Marshall, G.
title Ion transport in thin cell electrodeposition: Modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions
title_short Ion transport in thin cell electrodeposition: Modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions
title_full Ion transport in thin cell electrodeposition: Modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions
title_fullStr Ion transport in thin cell electrodeposition: Modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions
title_full_unstemmed Ion transport in thin cell electrodeposition: Modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions
title_sort ion transport in thin cell electrodeposition: modelling three-ion electrolytes in dense branched morphology under constant voltage and current conditions
url http://hdl.handle.net/20.500.12110/paper_00134686_v50_n16-17_p3436_Marshall
work_keys_str_mv AT marshallg iontransportinthincellelectrodepositionmodellingthreeionelectrolytesindensebranchedmorphologyunderconstantvoltageandcurrentconditions
AT molinafv iontransportinthincellelectrodepositionmodellingthreeionelectrolytesindensebranchedmorphologyunderconstantvoltageandcurrentconditions
AT sobaa iontransportinthincellelectrodepositionmodellingthreeionelectrolytesindensebranchedmorphologyunderconstantvoltageandcurrentconditions
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