Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide

Twenty two carbon materials of different origins (e.g., graphite, graphene, carbon black, hydrochars, activated carbons, carbon nanotubes and nanofibers) and with varied physicochemical characteristics (e.g., electrical conductivity, structural order, surface functionalization, porosity) were invest...

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Detalles Bibliográficos
Autores: Muñoz Morales, Martín, Ramírez Vidal, Álvaro, Canizarès, Aurélien, Llanos López, Javier, Ania, Conchi
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/31904
Acceso en línea:http://hdl.handle.net/10578/31904
Access Level:acceso abierto
Palabra clave:Carbon cathodes
Electrical conductivity
Hydrogen peroxide
Toray paper
Structural defects
Cátodos de carbono
Conductividad eléctrica
Peróxido de hidrógeno
Papel toray
Defectos estructurales
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spelling Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxideMuñoz Morales, MartínRamírez Vidal, ÁlvaroCanizarès, AurélienLlanos López, JavierAnia, ConchiCarbon cathodesElectrical conductivityHydrogen peroxideToray paperStructural defectsCátodos de carbonoConductividad eléctricaPeróxido de hidrógenoPapel torayDefectos estructuralesTwenty two carbon materials of different origins (e.g., graphite, graphene, carbon black, hydrochars, activated carbons, carbon nanotubes and nanofibers) and with varied physicochemical characteristics (e.g., electrical conductivity, structural order, surface functionalization, porosity) were investigated as cathodes in the electrochemical production of hydrogen peroxide. A screening of the electrocatalytic performance was carried out in 0.2 cm2 (inks casted on a glassy carbon) and 4 cm2 electrodes (Toray paper). The highest H2O2 production yields were obtained for carbon nanotubes and carbon nanofibers, outperforming common carbon benchmarks for this application -i.e., carbon black, carbon felt-. Furthermore, a good catalytic activity was obtained with low-cost and disordered carbon cathodes with moderate electrical conductivity and density of structural defects (e.g., nanoporous carbons), both in terms of overall production rate, selectivity and energy consumption. Data also revealed that the H2O2 production yield and the faradaic efficiency are closely related to the structural parameters of the carbon materials (i.e., density of structural defects), rather than to the electrical conductivity, composition or porous features. An AD/AG threshold value of 1.5 can be used to discriminate the electrocatalytic activity of carbon cathodes for the production of H2O2 through a 2e-ORR, in terms of high production rates and good faradaic efficiencies.Elsevier202320232023info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10578/31904reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/319042026-05-27T07:36:41Z
dc.title.none.fl_str_mv Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide
title Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide
spellingShingle Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide
Muñoz Morales, Martín
Carbon cathodes
Electrical conductivity
Hydrogen peroxide
Toray paper
Structural defects
Cátodos de carbono
Conductividad eléctrica
Peróxido de hidrógeno
Papel toray
Defectos estructurales
title_short Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide
title_full Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide
title_fullStr Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide
title_full_unstemmed Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide
title_sort Evaluating key properties of carbon materials as cathodes for the electrogeneration of hydrogen peroxide
dc.creator.none.fl_str_mv Muñoz Morales, Martín
Ramírez Vidal, Álvaro
Canizarès, Aurélien
Llanos López, Javier
Ania, Conchi
author Muñoz Morales, Martín
author_facet Muñoz Morales, Martín
Ramírez Vidal, Álvaro
Canizarès, Aurélien
Llanos López, Javier
Ania, Conchi
author_role author
author2 Ramírez Vidal, Álvaro
Canizarès, Aurélien
Llanos López, Javier
Ania, Conchi
author2_role author
author
author
author
dc.subject.none.fl_str_mv Carbon cathodes
Electrical conductivity
Hydrogen peroxide
Toray paper
Structural defects
Cátodos de carbono
Conductividad eléctrica
Peróxido de hidrógeno
Papel toray
Defectos estructurales
topic Carbon cathodes
Electrical conductivity
Hydrogen peroxide
Toray paper
Structural defects
Cátodos de carbono
Conductividad eléctrica
Peróxido de hidrógeno
Papel toray
Defectos estructurales
description Twenty two carbon materials of different origins (e.g., graphite, graphene, carbon black, hydrochars, activated carbons, carbon nanotubes and nanofibers) and with varied physicochemical characteristics (e.g., electrical conductivity, structural order, surface functionalization, porosity) were investigated as cathodes in the electrochemical production of hydrogen peroxide. A screening of the electrocatalytic performance was carried out in 0.2 cm2 (inks casted on a glassy carbon) and 4 cm2 electrodes (Toray paper). The highest H2O2 production yields were obtained for carbon nanotubes and carbon nanofibers, outperforming common carbon benchmarks for this application -i.e., carbon black, carbon felt-. Furthermore, a good catalytic activity was obtained with low-cost and disordered carbon cathodes with moderate electrical conductivity and density of structural defects (e.g., nanoporous carbons), both in terms of overall production rate, selectivity and energy consumption. Data also revealed that the H2O2 production yield and the faradaic efficiency are closely related to the structural parameters of the carbon materials (i.e., density of structural defects), rather than to the electrical conductivity, composition or porous features. An AD/AG threshold value of 1.5 can be used to discriminate the electrocatalytic activity of carbon cathodes for the production of H2O2 through a 2e-ORR, in terms of high production rates and good faradaic efficiencies.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10578/31904
url http://hdl.handle.net/10578/31904
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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