Potentiodynamic behaviour of the rhodium/H2SO4(aq) interface in the potential range of the hydrogen and oxygen electrosorption

The electrochemical response of Rh/H2SO4(aq) interfaces at 25°C, subjected to different potential—time perturbation programs in the potential range of H and O electrosorption and H and O electrodesorption is reported. The H electrosorption and H electrod...

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Detalles Bibliográficos
Autores principales:	Pallotta, C., Tacconi, Norma R. de, Arvia, Alejandro Jorge
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1981
Materias:	Ciencias Exactas Química electrochemical response potentiodynamic rhodium O electrosorption O electrodesorption
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/125753 https://www.sciencedirect.com/science/article/abs/pii/0013468681850128
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-125753
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 electrochemical response potentiodynamic rhodium O electrosorption O electrodesorption
spellingShingle	Ciencias Exactas Química electrochemical response potentiodynamic rhodium O electrosorption O electrodesorption Pallotta, C. Tacconi, Norma R. de Arvia, Alejandro Jorge Potentiodynamic behaviour of the rhodium/H<sub>2</sub>SO<sub>4</sub>(aq) interface in the potential range of the hydrogen and oxygen electrosorption
topic_facet	Ciencias Exactas Química electrochemical response potentiodynamic rhodium O electrosorption O electrodesorption
description	The electrochemical response of Rh/H<sub>2</sub>SO<sub>4</sub>(aq) interfaces at 25°C, subjected to different potential—time perturbation programs in the potential range of H and O electrosorption and H and O electrodesorption is reported. The H electrosorption and H electrodesorption involve the participation of at least two distinguishable adsorption states. The degree of reversibility of the corresponding electrochemical processes is appreciably influenced by the history of the electrode including the type of perturbation applied to the electrode in the O electrosorption potential range. The O electrosorption and O electrodesorption involve the formation of different surface species as it is deduced either from the charge balance or from the kinetic response of the electrochemical interface. The early stages of the anodic reaction are interpreted through a reversible charge transfer comprising the formation of OH adsorbed species which later undergoes electrochemical and chemical reactions yielding different O-containing species. The existence of the various O-containing surface species as well as the influence of the most stable ones in the H electrosorption potential range is evidenced through their potentiodynamic electrodesorption. The kinetic results of the O electrosorption are discussed in terms of aging mechanisms including anion adsorption.
format	Articulo Articulo
author	Pallotta, C. Tacconi, Norma R. de Arvia, Alejandro Jorge
author_facet	Pallotta, C. Tacconi, Norma R. de Arvia, Alejandro Jorge
author_sort	Pallotta, C.
title	Potentiodynamic behaviour of the rhodium/H<sub>2</sub>SO<sub>4</sub>(aq) interface in the potential range of the hydrogen and oxygen electrosorption
title_short	Potentiodynamic behaviour of the rhodium/H<sub>2</sub>SO<sub>4</sub>(aq) interface in the potential range of the hydrogen and oxygen electrosorption
title_full	Potentiodynamic behaviour of the rhodium/H<sub>2</sub>SO<sub>4</sub>(aq) interface in the potential range of the hydrogen and oxygen electrosorption
title_fullStr	Potentiodynamic behaviour of the rhodium/H<sub>2</sub>SO<sub>4</sub>(aq) interface in the potential range of the hydrogen and oxygen electrosorption
title_full_unstemmed	Potentiodynamic behaviour of the rhodium/H<sub>2</sub>SO<sub>4</sub>(aq) interface in the potential range of the hydrogen and oxygen electrosorption
title_sort	potentiodynamic behaviour of the rhodium/h<sub>2</sub>so<sub>4</sub>(aq) interface in the potential range of the hydrogen and oxygen electrosorption
publishDate	1981
url	http://sedici.unlp.edu.ar/handle/10915/125753 https://www.sciencedirect.com/science/article/abs/pii/0013468681850128
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bdutipo_str	Repositorios
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Potentiodynamic behaviour of the rhodium/H<sub>2</sub>SO<sub>4</sub>(aq) interface in the potential range of the hydrogen and oxygen electrosorption

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