Electrochemical impedance spectroscopy on porous electrodes

Electrochemical d.c. and a.c. measurements have been carried out on porous Raney nickel in H2-saturated 0.1 M, 1 M, and 6 M NaOH solutions atT=303 K and 333 K using rotating-disc and static-plaar electrodes. For comparison, measurements were also performed on graphite-cloth and graphite-felt electro...

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Detalles Bibliográficos
Autores principales: Gassa, Liliana Mabel, Vilche, Jorge Roberto, Ebert, M., Jüttner, K., Lorenz, W.J.
Formato: Articulo
Lenguaje:Inglés
Publicado: 1990
Materias:
Química
Física
Transfer function
Oxidation reaction
Electrochemical impedance spectroscopy
Polarization curve
Potential range
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/138270
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-138270
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Física
Transfer function
Oxidation reaction
Electrochemical impedance spectroscopy
Polarization curve
Potential range
spellingShingle Química
Física
Transfer function
Oxidation reaction
Electrochemical impedance spectroscopy
Polarization curve
Potential range
Gassa, Liliana Mabel
Vilche, Jorge Roberto
Ebert, M.
Jüttner, K.
Lorenz, W.J.
Electrochemical impedance spectroscopy on porous electrodes
topic_facet Química
Física
Transfer function
Oxidation reaction
Electrochemical impedance spectroscopy
Polarization curve
Potential range
description Electrochemical d.c. and a.c. measurements have been carried out on porous Raney nickel in H2-saturated 0.1 M, 1 M, and 6 M NaOH solutions atT=303 K and 333 K using rotating-disc and static-plaar electrodes. For comparison, measurements were also performed on graphite-cloth and graphite-felt electrodes. From polarization curves and current transients obtained in the potential range of the hydrogen evolution and hydrogen oxidation reactions the dependence of the electrocatalytic activity of Raney nickel on the prepolarization conditions was studied. Impedance spectra in the frequency range 1 mHzf 10 kHz were used to determine the characteristic pore parameters and to identify the kinetic behaviour of the porous electrodes by application of transfer function analysis using non-linear fit routines.
format Articulo
Articulo
author Gassa, Liliana Mabel
Vilche, Jorge Roberto
Ebert, M.
Jüttner, K.
Lorenz, W.J.
author_facet Gassa, Liliana Mabel
Vilche, Jorge Roberto
Ebert, M.
Jüttner, K.
Lorenz, W.J.
author_sort Gassa, Liliana Mabel
title Electrochemical impedance spectroscopy on porous electrodes
title_short Electrochemical impedance spectroscopy on porous electrodes
title_full Electrochemical impedance spectroscopy on porous electrodes
title_fullStr Electrochemical impedance spectroscopy on porous electrodes
title_full_unstemmed Electrochemical impedance spectroscopy on porous electrodes
title_sort electrochemical impedance spectroscopy on porous electrodes
publishDate 1990
url http://sedici.unlp.edu.ar/handle/10915/138270
work_keys_str_mv AT gassalilianamabel electrochemicalimpedancespectroscopyonporouselectrodes
AT vilchejorgeroberto electrochemicalimpedancespectroscopyonporouselectrodes
AT ebertm electrochemicalimpedancespectroscopyonporouselectrodes
AT juttnerk electrochemicalimpedancespectroscopyonporouselectrodes
AT lorenzwj electrochemicalimpedancespectroscopyonporouselectrodes
bdutipo_str Repositorios
_version_ 1764820457010233345

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