Ellipsometry of nickel hydroxide electrodes formed by ex situ chemical precipitation : Potential routine and time effects

Ellipsometric and reflectivity data combined with voltammetric data have been obtained at 546.1 nm for different nickel hydroxide electrodes in 0.01 M NaOH at 25°C. The electrodes were prepared by ex situ chemical precipitation on a polished platinum substrate. The influence of the potential routine...

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Detalles Bibliográficos
Autores principales: Zerbino, Jorge Omar, De Pauli, C., Posadas, Dionisio, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1992
Materias:
Ciencias Exactas
Química
Nickel hydroxide electrodes
Kinetic
Ellipsometry
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/120805
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-120805
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
Nickel hydroxide electrodes
Kinetic
Ellipsometry
spellingShingle Ciencias Exactas
Química
Nickel hydroxide electrodes
Kinetic
Ellipsometry
Zerbino, Jorge Omar
De Pauli, C.
Posadas, Dionisio
Arvia, Alejandro Jorge
Ellipsometry of nickel hydroxide electrodes formed by ex situ chemical precipitation : Potential routine and time effects
topic_facet Ciencias Exactas
Química
Nickel hydroxide electrodes
Kinetic
Ellipsometry
description Ellipsometric and reflectivity data combined with voltammetric data have been obtained at 546.1 nm for different nickel hydroxide electrodes in 0.01 M NaOH at 25°C. The electrodes were prepared by ex situ chemical precipitation on a polished platinum substrate. The influence of the potential routine applied to the nickel hydroxide electrode on the corresponding optical parameters and time effects for both the oxidized and reduced forms of the active material kept at constant potential have been investigated. The nickel hydroxide layer is described as a mixture of nickel(II) hydroxide, nickel(III) hydroxide and electrolyte—water domains. The kinetic effects are discussed through a complex reaction pathway involving different nickel(II) and nickel(III) hydroxide species, the processes starting preferentially at the borders of the different domains.
format Articulo
Articulo
author Zerbino, Jorge Omar
De Pauli, C.
Posadas, Dionisio
Arvia, Alejandro Jorge
author_facet Zerbino, Jorge Omar
De Pauli, C.
Posadas, Dionisio
Arvia, Alejandro Jorge
author_sort Zerbino, Jorge Omar
title Ellipsometry of nickel hydroxide electrodes formed by ex situ chemical precipitation : Potential routine and time effects
title_short Ellipsometry of nickel hydroxide electrodes formed by ex situ chemical precipitation : Potential routine and time effects
title_full Ellipsometry of nickel hydroxide electrodes formed by ex situ chemical precipitation : Potential routine and time effects
title_fullStr Ellipsometry of nickel hydroxide electrodes formed by ex situ chemical precipitation : Potential routine and time effects
title_full_unstemmed Ellipsometry of nickel hydroxide electrodes formed by ex situ chemical precipitation : Potential routine and time effects
title_sort ellipsometry of nickel hydroxide electrodes formed by ex situ chemical precipitation : potential routine and time effects
publishDate 1992
url http://sedici.unlp.edu.ar/handle/10915/120805
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