Surface resistance change during nickel hydroxide phase transformations
- Autores
- Tucceri, Ismael Ricardo
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Nickel hydroxide undergoes profound structural transformations under prolonged potential cycling in alkaline solutions. In this work, gold film electrodes modified with different nickel hydroxide coverages were subjected to continuous potentiodynamic cycling in alkaline medium, while the simultaneous evolution of voltammetric and surface resistance records was monitored until stable responses were obtained. A surface resistance (SR) increase proportional to the nickel hydroxide coverage was observed at potential values more negative than − 0.3 V (vs. SCE), which was attributed to the deposition of nickel adatoms from the reduction of nickel hydroxide layers. This SR change was analysed on the basis of the electron scattering theory, considering that nickel adatoms act as scatterers for the reflection of gold conduction electrons. The nickel adatom layer produced from the reduction of the nickel hydroxide structure formed during the first voltammetric scan potential cycles (< 40) exhibits a more specular reflection than that generated after a larger number of potential cycles (> 140). As the specularity of a layer for electron scattering can be associated with scatterer compactness, the distance between nickel atoms in the former nickel adatom structure is shorter than that in the last one.
Fil: Tucceri, Ismael Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina - Materia
-
Nickel Adatom Layer
Nickel Hydroxide-Gold Film Modified Electrode
Potentiodynamic Cycling
Surface Resistance - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/63957
Ver los metadatos del registro completo
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Surface resistance change during nickel hydroxide phase transformationsTucceri, Ismael RicardoNickel Adatom LayerNickel Hydroxide-Gold Film Modified ElectrodePotentiodynamic CyclingSurface Resistancehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Nickel hydroxide undergoes profound structural transformations under prolonged potential cycling in alkaline solutions. In this work, gold film electrodes modified with different nickel hydroxide coverages were subjected to continuous potentiodynamic cycling in alkaline medium, while the simultaneous evolution of voltammetric and surface resistance records was monitored until stable responses were obtained. A surface resistance (SR) increase proportional to the nickel hydroxide coverage was observed at potential values more negative than − 0.3 V (vs. SCE), which was attributed to the deposition of nickel adatoms from the reduction of nickel hydroxide layers. This SR change was analysed on the basis of the electron scattering theory, considering that nickel adatoms act as scatterers for the reflection of gold conduction electrons. The nickel adatom layer produced from the reduction of the nickel hydroxide structure formed during the first voltammetric scan potential cycles (< 40) exhibits a more specular reflection than that generated after a larger number of potential cycles (> 140). As the specularity of a layer for electron scattering can be associated with scatterer compactness, the distance between nickel atoms in the former nickel adatom structure is shorter than that in the last one.Fil: Tucceri, Ismael Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaElsevier Science Sa2017-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63957Tucceri, Ismael Ricardo; Surface resistance change during nickel hydroxide phase transformations; Elsevier Science Sa; Journal of Electroanalytical Chemistry; 792; 5-2017; 104-1091572-6657CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1572665717302175info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jelechem.2017.03.039info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:22:54Zoai:ri.conicet.gov.ar:11336/63957instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:22:54.729CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Surface resistance change during nickel hydroxide phase transformations |
title |
Surface resistance change during nickel hydroxide phase transformations |
spellingShingle |
Surface resistance change during nickel hydroxide phase transformations Tucceri, Ismael Ricardo Nickel Adatom Layer Nickel Hydroxide-Gold Film Modified Electrode Potentiodynamic Cycling Surface Resistance |
title_short |
Surface resistance change during nickel hydroxide phase transformations |
title_full |
Surface resistance change during nickel hydroxide phase transformations |
title_fullStr |
Surface resistance change during nickel hydroxide phase transformations |
title_full_unstemmed |
Surface resistance change during nickel hydroxide phase transformations |
title_sort |
Surface resistance change during nickel hydroxide phase transformations |
dc.creator.none.fl_str_mv |
Tucceri, Ismael Ricardo |
author |
Tucceri, Ismael Ricardo |
author_facet |
Tucceri, Ismael Ricardo |
author_role |
author |
dc.subject.none.fl_str_mv |
Nickel Adatom Layer Nickel Hydroxide-Gold Film Modified Electrode Potentiodynamic Cycling Surface Resistance |
topic |
Nickel Adatom Layer Nickel Hydroxide-Gold Film Modified Electrode Potentiodynamic Cycling Surface Resistance |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Nickel hydroxide undergoes profound structural transformations under prolonged potential cycling in alkaline solutions. In this work, gold film electrodes modified with different nickel hydroxide coverages were subjected to continuous potentiodynamic cycling in alkaline medium, while the simultaneous evolution of voltammetric and surface resistance records was monitored until stable responses were obtained. A surface resistance (SR) increase proportional to the nickel hydroxide coverage was observed at potential values more negative than − 0.3 V (vs. SCE), which was attributed to the deposition of nickel adatoms from the reduction of nickel hydroxide layers. This SR change was analysed on the basis of the electron scattering theory, considering that nickel adatoms act as scatterers for the reflection of gold conduction electrons. The nickel adatom layer produced from the reduction of the nickel hydroxide structure formed during the first voltammetric scan potential cycles (< 40) exhibits a more specular reflection than that generated after a larger number of potential cycles (> 140). As the specularity of a layer for electron scattering can be associated with scatterer compactness, the distance between nickel atoms in the former nickel adatom structure is shorter than that in the last one. Fil: Tucceri, Ismael Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina |
description |
Nickel hydroxide undergoes profound structural transformations under prolonged potential cycling in alkaline solutions. In this work, gold film electrodes modified with different nickel hydroxide coverages were subjected to continuous potentiodynamic cycling in alkaline medium, while the simultaneous evolution of voltammetric and surface resistance records was monitored until stable responses were obtained. A surface resistance (SR) increase proportional to the nickel hydroxide coverage was observed at potential values more negative than − 0.3 V (vs. SCE), which was attributed to the deposition of nickel adatoms from the reduction of nickel hydroxide layers. This SR change was analysed on the basis of the electron scattering theory, considering that nickel adatoms act as scatterers for the reflection of gold conduction electrons. The nickel adatom layer produced from the reduction of the nickel hydroxide structure formed during the first voltammetric scan potential cycles (< 40) exhibits a more specular reflection than that generated after a larger number of potential cycles (> 140). As the specularity of a layer for electron scattering can be associated with scatterer compactness, the distance between nickel atoms in the former nickel adatom structure is shorter than that in the last one. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 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://hdl.handle.net/11336/63957 Tucceri, Ismael Ricardo; Surface resistance change during nickel hydroxide phase transformations; Elsevier Science Sa; Journal of Electroanalytical Chemistry; 792; 5-2017; 104-109 1572-6657 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/63957 |
identifier_str_mv |
Tucceri, Ismael Ricardo; Surface resistance change during nickel hydroxide phase transformations; Elsevier Science Sa; Journal of Electroanalytical Chemistry; 792; 5-2017; 104-109 1572-6657 CONICET Digital CONICET |
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/pii/S1572665717302175 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jelechem.2017.03.039 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science Sa |
publisher.none.fl_str_mv |
Elsevier Science Sa |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614222189690880 |
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13.070432 |