Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential

Autores
Gadea, Esteban David; Pérez Sirkin, Yamila Anahí; Molinero, Valeria; Scherlis Perel, Damian Ariel
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Gas-producing electrochemical reactions are key to energy conversion and generation technologies. Bubble formation dramatically decreases gas-production rates on nanoelectrodes, by confining the reaction to the electrode boundary. This results in the collapse of the current to a stationary value independent of the potential. Startlingly, these residual currents also appear to be insensitive to the nanoelectrode diameter in the 5 to 500 nm range. These results are counterintuitive, as it may be expected that the current be proportional to the circumference of the electrode, i.e., the length of the three-phase line where the reaction occurs. Here, we use molecular simulations and a kinetic model to elucidate the origin of current insensitivity with respect to the potential and establish its relationship to the size of nanoelectrodes. We provide critical insights for the design and operation of nanoscale electrochemical devices and demonstrate that nanoelectrode arrays maximize conversion rates compared to macroscopic electrodes with same total area.
Fil: Gadea, Esteban David. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Pérez Sirkin, Yamila Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Molinero, Valeria. University of Utah; Estados Unidos
Fil: Scherlis Perel, Damian Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Materia
Nanoelectrode
Kinetic Monte Carlo
Molecular Dynamics
electrochemistry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/143664
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and PotentialGadea, Esteban DavidPérez Sirkin, Yamila AnahíMolinero, ValeriaScherlis Perel, Damian ArielNanoelectrodeKinetic Monte CarloMolecular Dynamicselectrochemistryhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Gas-producing electrochemical reactions are key to energy conversion and generation technologies. Bubble formation dramatically decreases gas-production rates on nanoelectrodes, by confining the reaction to the electrode boundary. This results in the collapse of the current to a stationary value independent of the potential. Startlingly, these residual currents also appear to be insensitive to the nanoelectrode diameter in the 5 to 500 nm range. These results are counterintuitive, as it may be expected that the current be proportional to the circumference of the electrode, i.e., the length of the three-phase line where the reaction occurs. Here, we use molecular simulations and a kinetic model to elucidate the origin of current insensitivity with respect to the potential and establish its relationship to the size of nanoelectrodes. We provide critical insights for the design and operation of nanoscale electrochemical devices and demonstrate that nanoelectrode arrays maximize conversion rates compared to macroscopic electrodes with same total area.Fil: Gadea, Esteban David. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Pérez Sirkin, Yamila Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Molinero, Valeria. University of Utah; Estados UnidosFil: Scherlis Perel, Damian Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaAmerican Chemical Society2020-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/143664Gadea, Esteban David; Pérez Sirkin, Yamila Anahí; Molinero, Valeria; Scherlis Perel, Damian Ariel; Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential; American Chemical Society; Journal of Physical Chemistry Letters; 11; 16; 8-2020; 6573-65791948-7185CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jpclett.0c01404info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpclett.0c01404info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:41:31Zoai:ri.conicet.gov.ar:11336/143664instacron: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:34982025-10-15 15:41:31.95CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential
title Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential
spellingShingle Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential
Gadea, Esteban David
Nanoelectrode
Kinetic Monte Carlo
Molecular Dynamics
electrochemistry
title_short Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential
title_full Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential
title_fullStr Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential
title_full_unstemmed Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential
title_sort Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential
dc.creator.none.fl_str_mv Gadea, Esteban David
Pérez Sirkin, Yamila Anahí
Molinero, Valeria
Scherlis Perel, Damian Ariel
author Gadea, Esteban David
author_facet Gadea, Esteban David
Pérez Sirkin, Yamila Anahí
Molinero, Valeria
Scherlis Perel, Damian Ariel
author_role author
author2 Pérez Sirkin, Yamila Anahí
Molinero, Valeria
Scherlis Perel, Damian Ariel
author2_role author
author
author
dc.subject.none.fl_str_mv Nanoelectrode
Kinetic Monte Carlo
Molecular Dynamics
electrochemistry
topic Nanoelectrode
Kinetic Monte Carlo
Molecular Dynamics
electrochemistry
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Gas-producing electrochemical reactions are key to energy conversion and generation technologies. Bubble formation dramatically decreases gas-production rates on nanoelectrodes, by confining the reaction to the electrode boundary. This results in the collapse of the current to a stationary value independent of the potential. Startlingly, these residual currents also appear to be insensitive to the nanoelectrode diameter in the 5 to 500 nm range. These results are counterintuitive, as it may be expected that the current be proportional to the circumference of the electrode, i.e., the length of the three-phase line where the reaction occurs. Here, we use molecular simulations and a kinetic model to elucidate the origin of current insensitivity with respect to the potential and establish its relationship to the size of nanoelectrodes. We provide critical insights for the design and operation of nanoscale electrochemical devices and demonstrate that nanoelectrode arrays maximize conversion rates compared to macroscopic electrodes with same total area.
Fil: Gadea, Esteban David. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Pérez Sirkin, Yamila Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Molinero, Valeria. University of Utah; Estados Unidos
Fil: Scherlis Perel, Damian Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
description Gas-producing electrochemical reactions are key to energy conversion and generation technologies. Bubble formation dramatically decreases gas-production rates on nanoelectrodes, by confining the reaction to the electrode boundary. This results in the collapse of the current to a stationary value independent of the potential. Startlingly, these residual currents also appear to be insensitive to the nanoelectrode diameter in the 5 to 500 nm range. These results are counterintuitive, as it may be expected that the current be proportional to the circumference of the electrode, i.e., the length of the three-phase line where the reaction occurs. Here, we use molecular simulations and a kinetic model to elucidate the origin of current insensitivity with respect to the potential and establish its relationship to the size of nanoelectrodes. We provide critical insights for the design and operation of nanoscale electrochemical devices and demonstrate that nanoelectrode arrays maximize conversion rates compared to macroscopic electrodes with same total area.
publishDate 2020
dc.date.none.fl_str_mv 2020-08
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/11336/143664
Gadea, Esteban David; Pérez Sirkin, Yamila Anahí; Molinero, Valeria; Scherlis Perel, Damian Ariel; Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential; American Chemical Society; Journal of Physical Chemistry Letters; 11; 16; 8-2020; 6573-6579
1948-7185
CONICET Digital
CONICET
url http://hdl.handle.net/11336/143664
identifier_str_mv Gadea, Esteban David; Pérez Sirkin, Yamila Anahí; Molinero, Valeria; Scherlis Perel, Damian Ariel; Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential; American Chemical Society; Journal of Physical Chemistry Letters; 11; 16; 8-2020; 6573-6579
1948-7185
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://pubs.acs.org/doi/10.1021/acs.jpclett.0c01404
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpclett.0c01404
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083526089244672
score 13.22299

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