Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent

Preparation of nanostructured materials with highly efficient active area is crucial for advancement in fields of electrocatalytic conversion of energy, energy storage, or biomedicine. In this regard, there are two main challenges in the electrochemical preparation of high-extended surface area of t...

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Detalles Bibliográficos
Autores: Serrà i Ramos, Albert, Sebastián, Paula, Landa-Castro, Midori, Gómez, Elvira
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/180127
Acceso en línea:https://hdl.handle.net/2445/180127
Access Level:acceso abierto
Palabra clave:Cobalt
Nanoestructures
Galvanoplàstia
Nanostructures
Electroplating
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spelling Electrochemical assessment of high active area of cobalt deposited in deep eutectic solventSerrà i Ramos, AlbertSebastián, PaulaLanda-Castro, MidoriGómez, ElviraCobaltNanoestructuresGalvanoplàstiaCobaltNanostructuresElectroplatingPreparation of nanostructured materials with highly efficient active area is crucial for advancement in fields of electrocatalytic conversion of energy, energy storage, or biomedicine. In this regard, there are two main challenges in the electrochemical preparation of high-extended surface area of the nanostructures: 1) establishing the optimal potential conditions to enhance the active area while reducing the size of the prepared material and, 2) simultaneously, finding a practice and simple in-situ methodology to qualitatively test the increase in the active surface area. Herein, we investigate the cobalt electrodeposition in choline chloride plus urea deep eutectic solvent (DES) and the effect of the DES in the increase of the active surface area of deposited Co films. In situ classical electrochemical techniques, in combination with exsitu characterization techniques, were employed to establish the best potential conditions to obtain metallic Co films with high active surface area. Then, the increase in active area was tested by using different voltammetric methodologies. The increase in intensity of the outer sphere electron transfer was tested as a tool to analyze the superficial change after cobalt deposition. Voltammetric response in organic medium using benzoquinone on Co films and in an aqueous medium using Ru(NH 3 ) 6 , after covering the Co films with gold via galvanic displacement, was assessed. Later, as alternative method, the active area of the freshly deposited Co films, after superficial modification with Au, was tested by lead underpotential deposition. Lead underpotential deposition on gold is a surface-structure process that indirectly allows the estimation of the increment in active area of prepared Co films.Elsevier B.V.2021202320212021info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion11 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/180127Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.jelechem.2021.115177Journal of Electroanalytical Chemistry, 2021, vol. 896, p. 115177https://doi.org/10.1016/j.jelechem.2021.115177cc-by-nc-nd (c) Elsevier B.V., 2021https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1801272026-05-29T05:05:01Z
dc.title.none.fl_str_mv Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent
title Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent
spellingShingle Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent
Serrà i Ramos, Albert
Cobalt
Nanoestructures
Galvanoplàstia
Cobalt
Nanostructures
Electroplating
title_short Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent
title_full Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent
title_fullStr Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent
title_full_unstemmed Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent
title_sort Electrochemical assessment of high active area of cobalt deposited in deep eutectic solvent
dc.creator.none.fl_str_mv Serrà i Ramos, Albert
Sebastián, Paula
Landa-Castro, Midori
Gómez, Elvira
author Serrà i Ramos, Albert
author_facet Serrà i Ramos, Albert
Sebastián, Paula
Landa-Castro, Midori
Gómez, Elvira
author_role author
author2 Sebastián, Paula
Landa-Castro, Midori
Gómez, Elvira
author2_role author
author
author
dc.subject.none.fl_str_mv Cobalt
Nanoestructures
Galvanoplàstia
Cobalt
Nanostructures
Electroplating
topic Cobalt
Nanoestructures
Galvanoplàstia
Cobalt
Nanostructures
Electroplating
description Preparation of nanostructured materials with highly efficient active area is crucial for advancement in fields of electrocatalytic conversion of energy, energy storage, or biomedicine. In this regard, there are two main challenges in the electrochemical preparation of high-extended surface area of the nanostructures: 1) establishing the optimal potential conditions to enhance the active area while reducing the size of the prepared material and, 2) simultaneously, finding a practice and simple in-situ methodology to qualitatively test the increase in the active surface area. Herein, we investigate the cobalt electrodeposition in choline chloride plus urea deep eutectic solvent (DES) and the effect of the DES in the increase of the active surface area of deposited Co films. In situ classical electrochemical techniques, in combination with exsitu characterization techniques, were employed to establish the best potential conditions to obtain metallic Co films with high active surface area. Then, the increase in active area was tested by using different voltammetric methodologies. The increase in intensity of the outer sphere electron transfer was tested as a tool to analyze the superficial change after cobalt deposition. Voltammetric response in organic medium using benzoquinone on Co films and in an aqueous medium using Ru(NH 3 ) 6 , after covering the Co films with gold via galvanic displacement, was assessed. Later, as alternative method, the active area of the freshly deposited Co films, after superficial modification with Au, was tested by lead underpotential deposition. Lead underpotential deposition on gold is a surface-structure process that indirectly allows the estimation of the increment in active area of prepared Co films.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/180127
url https://hdl.handle.net/2445/180127
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.jelechem.2021.115177
Journal of Electroanalytical Chemistry, 2021, vol. 896, p. 115177
https://doi.org/10.1016/j.jelechem.2021.115177
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier B.V., 2021
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier B.V., 2021
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 11 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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