Spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control

We study the ion transport in the interdisc region of thin-layer cells under square wave electric potential pulses by means of optical and particle velocimetry techniques. Experiments and measurements reveal that ion transport and deposit morphology, that constitute crucial factors in the characteri...

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Autores principales: Gonzalez, Graciela Alicia, Molina, Fernando Victor, Iemmi, Claudio César
Publicado: 2001
Materias:
Charge transfer
Dissolution
Electric potential
Electropolymerization
Frequencies
Surface roughness
Voltage control
Bipolar electrodeposition
Particle velocimetry
Spatially coupled bipolar electrochemistry (SCBE)
Thin-layer cells
Electrodeposition
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_NIS01839_v8_n_p190_DAngelo
http://hdl.handle.net/20.500.12110/paper_NIS01839_v8_n_p190_DAngelo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_NIS01839_v8_n_p190_DAngelo
record_format dspace
spelling paper:paper_NIS01839_v8_n_p190_DAngelo2023-06-08T16:39:27Z Spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control Gonzalez, Graciela Alicia Molina, Fernando Victor Iemmi, Claudio César Charge transfer Dissolution Electric potential Electropolymerization Frequencies Surface roughness Voltage control Bipolar electrodeposition Particle velocimetry Spatially coupled bipolar electrochemistry (SCBE) Thin-layer cells Electrodeposition We study the ion transport in the interdisc region of thin-layer cells under square wave electric potential pulses by means of optical and particle velocimetry techniques. Experiments and measurements reveal that ion transport and deposit morphology, that constitute crucial factors in the characteristics of the connection, are substantially influenced by puke frequency. Measurements show that the incubation time is roughly twice of that observed under DC conditions and does not increase with frequency. During this period, migration and diffusion are the dominant transport modes. After branching develops, convection plays a relevant role as well. It is found that the deposit morphology becomes less ramified as frequency increases, while the deposit growth speed is not significantly affected. A remarkable effect is found at low frequencies: the ion transport and the deposit growth pulsate in phase with the electric potential At the scale of the observation (10x), no signs of inertial effects were discerned. Fil:Gonzalez, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Molina, F.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Iemmi, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_NIS01839_v8_n_p190_DAngelo http://hdl.handle.net/20.500.12110/paper_NIS01839_v8_n_p190_DAngelo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Charge transfer
Dissolution
Electric potential
Electropolymerization
Frequencies
Surface roughness
Voltage control
Bipolar electrodeposition
Particle velocimetry
Spatially coupled bipolar electrochemistry (SCBE)
Thin-layer cells
Electrodeposition
spellingShingle Charge transfer
Dissolution
Electric potential
Electropolymerization
Frequencies
Surface roughness
Voltage control
Bipolar electrodeposition
Particle velocimetry
Spatially coupled bipolar electrochemistry (SCBE)
Thin-layer cells
Electrodeposition
Gonzalez, Graciela Alicia
Molina, Fernando Victor
Iemmi, Claudio César
Spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control
topic_facet Charge transfer
Dissolution
Electric potential
Electropolymerization
Frequencies
Surface roughness
Voltage control
Bipolar electrodeposition
Particle velocimetry
Spatially coupled bipolar electrochemistry (SCBE)
Thin-layer cells
Electrodeposition
description We study the ion transport in the interdisc region of thin-layer cells under square wave electric potential pulses by means of optical and particle velocimetry techniques. Experiments and measurements reveal that ion transport and deposit morphology, that constitute crucial factors in the characteristics of the connection, are substantially influenced by puke frequency. Measurements show that the incubation time is roughly twice of that observed under DC conditions and does not increase with frequency. During this period, migration and diffusion are the dominant transport modes. After branching develops, convection plays a relevant role as well. It is found that the deposit morphology becomes less ramified as frequency increases, while the deposit growth speed is not significantly affected. A remarkable effect is found at low frequencies: the ion transport and the deposit growth pulsate in phase with the electric potential At the scale of the observation (10x), no signs of inertial effects were discerned.
author Gonzalez, Graciela Alicia
Molina, Fernando Victor
Iemmi, Claudio César
author_facet Gonzalez, Graciela Alicia
Molina, Fernando Victor
Iemmi, Claudio César
author_sort Gonzalez, Graciela Alicia
title Spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control
title_short Spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control
title_full Spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control
title_fullStr Spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control
title_full_unstemmed Spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control
title_sort spatially coupled bipolar elect rodeposition in thin-layer cells under periodic voltage control
publishDate 2001
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_NIS01839_v8_n_p190_DAngelo
http://hdl.handle.net/20.500.12110/paper_NIS01839_v8_n_p190_DAngelo
work_keys_str_mv AT gonzalezgracielaalicia spatiallycoupledbipolarelectrodepositioninthinlayercellsunderperiodicvoltagecontrol
AT molinafernandovictor spatiallycoupledbipolarelectrodepositioninthinlayercellsunderperiodicvoltagecontrol
AT iemmiclaudiocesar spatiallycoupledbipolarelectrodepositioninthinlayercellsunderperiodicvoltagecontrol
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