An ac impedance study of dendritic silver three-dimensional electrodeposits
- Autores
- Hernández-Creus, A.; Bolzán, Agustín Eduardo; Carro, P.; González, S.; Salvarezza, Roberto Carlos; Arvia, Alejandro Jorge
- Año de publicación
- 1993
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The ac impedance behaviour of electrochemically grown dendritic Ag three-dimensional electrodeposits grown from aqueous Ag+ ion containing solutions has been studied in the blocking regime covering the 1 ⩽ f ⩽ 104 Hz frequency range (ω = 2πf). These deposits exhibit fractal surface and non fractal mass (volume) characteristics. Impedance data displayed as log Z″ vs. log ω plots show two linear portions with different frequency dispersion exponents <α > = 0.95 ± 0.03 and <α > = 0.67 ± 0.05, respectively. The crossover frequency, ωλ, as determined from those plots, mainly depends on the electrolyte resistivity and, to a minor extent, on the Ag+ ion electrodeposition charge. For ω > ωλ, the surface fractal dimension derived from the reciprocal relationship, Ds = (1/α) + 1, is Ds = 2.45 ± 0.1. This figure agrees with that obtained from the log (area) vs. log (volume) plots.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
Fractals
Ag electrodes
Rough metal surfaces
Ac impedance
Electrodeposition - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/118957
Ver los metadatos del registro completo
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An ac impedance study of dendritic silver three-dimensional electrodepositsHernández-Creus, A.Bolzán, Agustín EduardoCarro, P.González, S.Salvarezza, Roberto CarlosArvia, Alejandro JorgeCiencias ExactasQuímicaFractalsAg electrodesRough metal surfacesAc impedanceElectrodepositionThe ac impedance behaviour of electrochemically grown dendritic Ag three-dimensional electrodeposits grown from aqueous Ag<sub>+</sub> ion containing solutions has been studied in the blocking regime covering the 1 ⩽ f ⩽ 10<sub>4</sub> Hz frequency range (ω = 2πf). These deposits exhibit fractal surface and non fractal mass (volume) characteristics. Impedance data displayed as log Z″ vs. log ω plots show two linear portions with different frequency dispersion exponents <α > = 0.95 ± 0.03 and <α > = 0.67 ± 0.05, respectively. The crossover frequency, ω<sub>λ</sub>, as determined from those plots, mainly depends on the electrolyte resistivity and, to a minor extent, on the Ag<sub>+</sub> ion electrodeposition charge. For ω > ω<sub>λ</sub>, the surface fractal dimension derived from the reciprocal relationship, D<sub>s</sub> = (1/α) + 1, is D<sub>s</sub> = 2.45 ± 0.1. This figure agrees with that obtained from the log (area) vs. log (volume) plots.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1993info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1545-1549http://sedici.unlp.edu.ar/handle/10915/118957enginfo:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:19:51Zoai:sedici.unlp.edu.ar:10915/118957Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:19:51.705SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
An ac impedance study of dendritic silver three-dimensional electrodeposits |
| title |
An ac impedance study of dendritic silver three-dimensional electrodeposits |
| spellingShingle |
An ac impedance study of dendritic silver three-dimensional electrodeposits Hernández-Creus, A. Ciencias Exactas Química Fractals Ag electrodes Rough metal surfaces Ac impedance Electrodeposition |
| title_short |
An ac impedance study of dendritic silver three-dimensional electrodeposits |
| title_full |
An ac impedance study of dendritic silver three-dimensional electrodeposits |
| title_fullStr |
An ac impedance study of dendritic silver three-dimensional electrodeposits |
| title_full_unstemmed |
An ac impedance study of dendritic silver three-dimensional electrodeposits |
| title_sort |
An ac impedance study of dendritic silver three-dimensional electrodeposits |
| dc.creator.none.fl_str_mv |
Hernández-Creus, A. Bolzán, Agustín Eduardo Carro, P. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author |
Hernández-Creus, A. |
| author_facet |
Hernández-Creus, A. Bolzán, Agustín Eduardo Carro, P. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author_role |
author |
| author2 |
Bolzán, Agustín Eduardo Carro, P. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Química Fractals Ag electrodes Rough metal surfaces Ac impedance Electrodeposition |
| topic |
Ciencias Exactas Química Fractals Ag electrodes Rough metal surfaces Ac impedance Electrodeposition |
| dc.description.none.fl_txt_mv |
The ac impedance behaviour of electrochemically grown dendritic Ag three-dimensional electrodeposits grown from aqueous Ag<sub>+</sub> ion containing solutions has been studied in the blocking regime covering the 1 ⩽ f ⩽ 10<sub>4</sub> Hz frequency range (ω = 2πf). These deposits exhibit fractal surface and non fractal mass (volume) characteristics. Impedance data displayed as log Z″ vs. log ω plots show two linear portions with different frequency dispersion exponents <α > = 0.95 ± 0.03 and <α > = 0.67 ± 0.05, respectively. The crossover frequency, ω<sub>λ</sub>, as determined from those plots, mainly depends on the electrolyte resistivity and, to a minor extent, on the Ag<sub>+</sub> ion electrodeposition charge. For ω > ω<sub>λ</sub>, the surface fractal dimension derived from the reciprocal relationship, D<sub>s</sub> = (1/α) + 1, is D<sub>s</sub> = 2.45 ± 0.1. This figure agrees with that obtained from the log (area) vs. log (volume) plots. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
| description |
The ac impedance behaviour of electrochemically grown dendritic Ag three-dimensional electrodeposits grown from aqueous Ag<sub>+</sub> ion containing solutions has been studied in the blocking regime covering the 1 ⩽ f ⩽ 10<sub>4</sub> Hz frequency range (ω = 2πf). These deposits exhibit fractal surface and non fractal mass (volume) characteristics. Impedance data displayed as log Z″ vs. log ω plots show two linear portions with different frequency dispersion exponents <α > = 0.95 ± 0.03 and <α > = 0.67 ± 0.05, respectively. The crossover frequency, ω<sub>λ</sub>, as determined from those plots, mainly depends on the electrolyte resistivity and, to a minor extent, on the Ag<sub>+</sub> ion electrodeposition charge. For ω > ω<sub>λ</sub>, the surface fractal dimension derived from the reciprocal relationship, D<sub>s</sub> = (1/α) + 1, is D<sub>s</sub> = 2.45 ± 0.1. This figure agrees with that obtained from the log (area) vs. log (volume) plots. |
| publishDate |
1993 |
| dc.date.none.fl_str_mv |
1993 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/118957 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/0013-4686 |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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