Fast electrochemical reactions during the anodization of platinum electrodes in aqueous solutions : Detection of a reversible charge storage process at platinum-oxide-coated electrodes

Fast electrochemical reactions at platinum and platinum-oxide-coated electrodes immersed in aqueous electrolytes can be observed by means of the triangularly modulated triangular potential sweep technique. The surface redox process commences at about 0.75 V in acid solution and is related to the ini...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Bolzán, Agustín Eduardo, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1992
Materias:
Ciencias Exactas
Química
Platinum
Platinum-oxide-coated electrodes
Electrochemical reactions
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/121076
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-121076
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
Platinum
Platinum-oxide-coated electrodes
Electrochemical reactions
spellingShingle Ciencias Exactas
Química
Platinum
Platinum-oxide-coated electrodes
Electrochemical reactions
Bolzán, Agustín Eduardo
Arvia, Alejandro Jorge
Fast electrochemical reactions during the anodization of platinum electrodes in aqueous solutions : Detection of a reversible charge storage process at platinum-oxide-coated electrodes
topic_facet Ciencias Exactas
Química
Platinum
Platinum-oxide-coated electrodes
Electrochemical reactions
description Fast electrochemical reactions at platinum and platinum-oxide-coated electrodes immersed in aqueous electrolytes can be observed by means of the triangularly modulated triangular potential sweep technique. The surface redox process commences at about 0.75 V in acid solution and is related to the initial oxygen-containing species reversibly electroadsorbed on platinum. Platinum coated with an oxide layer formed through a potentiodynamic routine presents a reversible charge storage process at about 1.6 V in acid solution. The corresponding reaction can be interpreted as a reversible redox couple involving Pt(II)-Pt(IV) and proton injection in the platinum oxide matrix. The charge contribution of the second redox system is smaller than the total oxide charge accumulated on the substrate. Both fast redox systems appear also in base solutions.
format Articulo
Articulo
author Bolzán, Agustín Eduardo
Arvia, Alejandro Jorge
author_facet Bolzán, Agustín Eduardo
Arvia, Alejandro Jorge
author_sort Bolzán, Agustín Eduardo
title Fast electrochemical reactions during the anodization of platinum electrodes in aqueous solutions : Detection of a reversible charge storage process at platinum-oxide-coated electrodes
title_short Fast electrochemical reactions during the anodization of platinum electrodes in aqueous solutions : Detection of a reversible charge storage process at platinum-oxide-coated electrodes
title_full Fast electrochemical reactions during the anodization of platinum electrodes in aqueous solutions : Detection of a reversible charge storage process at platinum-oxide-coated electrodes
title_fullStr Fast electrochemical reactions during the anodization of platinum electrodes in aqueous solutions : Detection of a reversible charge storage process at platinum-oxide-coated electrodes
title_full_unstemmed Fast electrochemical reactions during the anodization of platinum electrodes in aqueous solutions : Detection of a reversible charge storage process at platinum-oxide-coated electrodes
title_sort fast electrochemical reactions during the anodization of platinum electrodes in aqueous solutions : detection of a reversible charge storage process at platinum-oxide-coated electrodes
publishDate 1992
url http://sedici.unlp.edu.ar/handle/10915/121076
work_keys_str_mv AT bolzanagustineduardo fastelectrochemicalreactionsduringtheanodizationofplatinumelectrodesinaqueoussolutionsdetectionofareversiblechargestorageprocessatplatinumoxidecoatedelectrodes
AT arviaalejandrojorge fastelectrochemicalreactionsduringtheanodizationofplatinumelectrodesinaqueoussolutionsdetectionofareversiblechargestorageprocessatplatinumoxidecoatedelectrodes
bdutipo_str Repositorios
_version_ 1764820448872235009

Ejemplares similares