Artículo
González, G.; Soba, A.; Marshall, G.; Molina, F.V.; Rosso, M. "Dense branched morphology in electrochemical deposition in a thin cell vertically oriented" (2007) Electrochimica Acta. 53(1):133-140
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Abstract:
Convection due to electric and gravity forces increase complexity in thin layer electrochemistry (ECD). We describe conditions in a vertical cell with the cathode above the anode in which global convection is eliminated and a dense branched morphology with a smooth front is obtained. It is shown that these conditions allow a theoretical one dimensional modeling notably simplifying the complex analysis of the problem. We report experimental measurements under constant current conditions showing that the deposit, cathodic and proton fronts scale linearly with time, a signature of migration controlled regime. We discuss a theoretical ECD model under galvanostatic conditions with a three ion electrolyte and a growth model, consisting in the one dimensional Nernst-Planck equations for ion transport, the Poisson equation for the electric field and a growth law whose front velocity equals the anion mobility times the local electric field. The model predicts cation, anion and proton concentration profiles, electric field variations and deposit growth speed, that are in good agreement with experiments; the predicted evolution and collision of the deposit and proton fronts reveal a time scaling close to those observed in experiments. © 2007 Elsevier Ltd. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Dense branched morphology in electrochemical deposition in a thin cell vertically oriented |
| Autor: | González, G.; Soba, A.; Marshall, G.; Molina, F.V.; Rosso, M. |
| Filiación: | Laboratoire de Physique de la Matière Condensée, CNRS-Ecole Polytechnique, F91128 Palaiseau Cedex, France Laboratorio de Sistemas Complejos, Departamento de Computación, Facultad de Ciencias Exactas y Naturales, 1428 Buenos Aires, Argentina Cornell Theory Center, Laboratory for Atomic and Solid State Physics, Cornell University, Ithaca, NY 14850, United States INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina |
| Palabras clave: | Electrodeposition; Ion transport; Migration; Numerical simulations; Thin cells; Cathodes; Computer simulation; Concentration (process); Large scale systems; Measurement theory; Numerical methods; Poisson equation; Problem solving; Protons; Dense branched morphology; Dimensional modeling; Electrochemical cells |
| Año: | 2007 |
| Volumen: | 53 |
| Número: | 1 |
| Página de inicio: | 133 |
| Página de fin: | 140 |
| DOI: | http://dx.doi.org/10.1016/j.electacta.2007.02.069 |
| Título revista: | Electrochimica Acta |
| Título revista abreviado: | Electrochim Acta |
| ISSN: | 00134686 |
| CODEN: | ELCAA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v53_n1_p133_Gonzalez |
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Citas:
---------- APA ----------
González, G., Soba, A., Marshall, G., Molina, F.V. & Rosso, M. (2007) . Dense branched morphology in electrochemical deposition in a thin cell vertically oriented. Electrochimica Acta, 53(1), 133-140.http://dx.doi.org/10.1016/j.electacta.2007.02.069
---------- CHICAGO ----------
González, G., Soba, A., Marshall, G., Molina, F.V., Rosso, M. "Dense branched morphology in electrochemical deposition in a thin cell vertically oriented" . Electrochimica Acta 53, no. 1 (2007) : 133-140.http://dx.doi.org/10.1016/j.electacta.2007.02.069
---------- MLA ----------
González, G., Soba, A., Marshall, G., Molina, F.V., Rosso, M. "Dense branched morphology in electrochemical deposition in a thin cell vertically oriented" . Electrochimica Acta, vol. 53, no. 1, 2007, pp. 133-140.http://dx.doi.org/10.1016/j.electacta.2007.02.069
---------- VANCOUVER ----------
González, G., Soba, A., Marshall, G., Molina, F.V., Rosso, M. Dense branched morphology in electrochemical deposition in a thin cell vertically oriented. Electrochim Acta. 2007;53(1):133-140.http://dx.doi.org/10.1016/j.electacta.2007.02.069
