Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes
- Autores
- Zinola Sánchez, Carlos Fernando; Castro Luna Berenguer, Ana María del Carmen; Arvia, Alejandro Jorge
- Año de publicación
- 1994
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The oxygen electroreduction reaction (OERR) kinetics at (111)- and (100)-type Pt electrodes has been studied in aqueous 1.0 M H2SO4 solutions in the 8–62°C range. On both Pt electrodes and at all temperatures, two Tafel regions have been observed. The Tafel slope in the low current density range is −0.053 ± 0.005 V decade−1, irrespective of temperature and the surface texture of the electrode. For (111)-type Pt, the Tafel slope in the high current density range increases with temperature, approaching the −2.303(2RT/F) ratio, whereas for (100)-type Pt, it reaches a temperature-independent value equal to −0.165 ± 0.003 V decade−1. Temperature dependences of OERR Tafel slopes on both types of Pt electrodes offer the possibility of further insights into the mechanism of the reaction, through the interpretation of both the adsorption enthalpy and entropy of intermediates produced along the OERR. Compensation effects, involving activation enthalpy and entropy variations with the applied potential, are also considered to account for experimental data.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
oxygen
electroreduction
platinum
temperature
kinetics parameters - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/127474
Ver los metadatos del registro completo
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Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodesZinola Sánchez, Carlos FernandoCastro Luna Berenguer, Ana María del CarmenArvia, Alejandro JorgeCiencias ExactasQuímicaoxygenelectroreductionplatinumtemperaturekinetics parametersThe oxygen electroreduction reaction (OERR) kinetics at (111)- and (100)-type Pt electrodes has been studied in aqueous 1.0 M H<sub>2</sub>SO<sub>4</sub> solutions in the 8–62°C range. On both Pt electrodes and at all temperatures, two Tafel regions have been observed. The Tafel slope in the low current density range is −0.053 ± 0.005 V decade<sup>−1</sup>, irrespective of temperature and the surface texture of the electrode. For (111)-type Pt, the Tafel slope in the high current density range increases with temperature, approaching the −2.303(2RT/F) ratio, whereas for (100)-type Pt, it reaches a temperature-independent value equal to −0.165 ± 0.003 V decade<sup>−1</sup>. Temperature dependences of OERR Tafel slopes on both types of Pt electrodes offer the possibility of further insights into the mechanism of the reaction, through the interpretation of both the adsorption enthalpy and entropy of intermediates produced along the OERR. Compensation effects, involving activation enthalpy and entropy variations with the applied potential, are also considered to account for experimental data.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1994info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1951-1959http://sedici.unlp.edu.ar/handle/10915/127474enginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/0013468694850739info:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(94)85073-9info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:30:48Zoai:sedici.unlp.edu.ar:10915/127474Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:48.95SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes |
title |
Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes |
spellingShingle |
Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes Zinola Sánchez, Carlos Fernando Ciencias Exactas Química oxygen electroreduction platinum temperature kinetics parameters |
title_short |
Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes |
title_full |
Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes |
title_fullStr |
Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes |
title_full_unstemmed |
Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes |
title_sort |
Temperature dependence of kinetic parameters related to oxygen electroreduction in acid solutions on platinum electrodes |
dc.creator.none.fl_str_mv |
Zinola Sánchez, Carlos Fernando Castro Luna Berenguer, Ana María del Carmen Arvia, Alejandro Jorge |
author |
Zinola Sánchez, Carlos Fernando |
author_facet |
Zinola Sánchez, Carlos Fernando Castro Luna Berenguer, Ana María del Carmen Arvia, Alejandro Jorge |
author_role |
author |
author2 |
Castro Luna Berenguer, Ana María del Carmen Arvia, Alejandro Jorge |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Ciencias Exactas Química oxygen electroreduction platinum temperature kinetics parameters |
topic |
Ciencias Exactas Química oxygen electroreduction platinum temperature kinetics parameters |
dc.description.none.fl_txt_mv |
The oxygen electroreduction reaction (OERR) kinetics at (111)- and (100)-type Pt electrodes has been studied in aqueous 1.0 M H<sub>2</sub>SO<sub>4</sub> solutions in the 8–62°C range. On both Pt electrodes and at all temperatures, two Tafel regions have been observed. The Tafel slope in the low current density range is −0.053 ± 0.005 V decade<sup>−1</sup>, irrespective of temperature and the surface texture of the electrode. For (111)-type Pt, the Tafel slope in the high current density range increases with temperature, approaching the −2.303(2RT/F) ratio, whereas for (100)-type Pt, it reaches a temperature-independent value equal to −0.165 ± 0.003 V decade<sup>−1</sup>. Temperature dependences of OERR Tafel slopes on both types of Pt electrodes offer the possibility of further insights into the mechanism of the reaction, through the interpretation of both the adsorption enthalpy and entropy of intermediates produced along the OERR. Compensation effects, involving activation enthalpy and entropy variations with the applied potential, are also considered to account for experimental data. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
description |
The oxygen electroreduction reaction (OERR) kinetics at (111)- and (100)-type Pt electrodes has been studied in aqueous 1.0 M H<sub>2</sub>SO<sub>4</sub> solutions in the 8–62°C range. On both Pt electrodes and at all temperatures, two Tafel regions have been observed. The Tafel slope in the low current density range is −0.053 ± 0.005 V decade<sup>−1</sup>, irrespective of temperature and the surface texture of the electrode. For (111)-type Pt, the Tafel slope in the high current density range increases with temperature, approaching the −2.303(2RT/F) ratio, whereas for (100)-type Pt, it reaches a temperature-independent value equal to −0.165 ± 0.003 V decade<sup>−1</sup>. Temperature dependences of OERR Tafel slopes on both types of Pt electrodes offer the possibility of further insights into the mechanism of the reaction, through the interpretation of both the adsorption enthalpy and entropy of intermediates produced along the OERR. Compensation effects, involving activation enthalpy and entropy variations with the applied potential, are also considered to account for experimental data. |
publishDate |
1994 |
dc.date.none.fl_str_mv |
1994 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/127474 |
url |
http://sedici.unlp.edu.ar/handle/10915/127474 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/0013468694850739 info:eu-repo/semantics/altIdentifier/issn/0013-4686 info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(94)85073-9 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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application/pdf 1951-1959 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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