An ac impedance study of dendritic silver three-dimensional electrodeposits

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 depo...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hernández-Creus, A., Bolzán, Agustín Eduardo, Carro, P., González, S., Salvarezza, Roberto Carlos, Arvia, Alejandro Jorge
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1993
Materias:	Ciencias Exactas Química Fractals Ag electrodes Rough metal surfaces Ac impedance Electrodeposition
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/118957
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-118957
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Química Fractals Ag electrodes Rough metal surfaces Ac impedance Electrodeposition
spellingShingle	Ciencias Exactas Química Fractals Ag electrodes Rough metal surfaces Ac impedance Electrodeposition Hernández-Creus, A. Bolzán, Agustín Eduardo Carro, P. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge An ac impedance study of dendritic silver three-dimensional electrodeposits
topic_facet	Ciencias Exactas Química Fractals Ag electrodes Rough metal surfaces Ac impedance Electrodeposition
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.
format	Articulo Articulo
author	Hernández-Creus, A. Bolzán, Agustín Eduardo Carro, P. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge
author_facet	Hernández-Creus, A. Bolzán, Agustín Eduardo Carro, P. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge
author_sort	Hernández-Creus, A.
title	An ac impedance study of dendritic silver three-dimensional electrodeposits
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	ac impedance study of dendritic silver three-dimensional electrodeposits
publishDate	1993
url	http://sedici.unlp.edu.ar/handle/10915/118957
work_keys_str_mv	AT hernandezcreusa anacimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT bolzanagustineduardo anacimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT carrop anacimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT gonzalezs anacimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT salvarezzarobertocarlos anacimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT arviaalejandrojorge anacimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT hernandezcreusa acimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT bolzanagustineduardo acimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT carrop acimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT gonzalezs acimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT salvarezzarobertocarlos acimpedancestudyofdendriticsilverthreedimensionalelectrodeposits AT arviaalejandrojorge acimpedancestudyofdendriticsilverthreedimensionalelectrodeposits
bdutipo_str	Repositorios
_version_	1764820447742918658

An ac impedance study of dendritic silver three-dimensional electrodeposits

Ejemplares similares