Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors

A graphene doped carbon xerogel was synthesized by simply replacing the water (solvent) by an aqueous well-dispersed graphene oxide stable suspension in the precursor mixture used for the synthesis of the organic xerogel. During the carbonization of the organic xerogel, the graphene oxide sheets are...

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Autores: Canal Rodríguez, María, Arenillas de la Puente, Ana, Rey Raap, Natalia, Ramos Fernández, Gloria, Martín Gullón, Ignacio, Menéndez Díaz, José Ángel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/147594
Acceso en línea:http://hdl.handle.net/10261/147594
Access Level:acceso abierto
Palabra clave:Carbon xerogels
Graphene oxide
Graphene
Supercapacitor
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spelling Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitorsCanal Rodríguez, MaríaArenillas de la Puente, AnaRey Raap, NataliaRamos Fernández, GloriaMartín Gullón, IgnacioMenéndez Díaz, José ÁngelCarbon xerogelsGraphene oxideGrapheneSupercapacitorA graphene doped carbon xerogel was synthesized by simply replacing the water (solvent) by an aqueous well-dispersed graphene oxide stable suspension in the precursor mixture used for the synthesis of the organic xerogel. During the carbonization of the organic xerogel, the graphene oxide sheets are reduced to graphene, which is embedded and well dispersed within the carbon xerogel matrix. Only a small minimum amount of graphene oxide is necessary to interconnect the graphene sheets throughout the carbon xerogel. This material has both a high porosity and an excellent electrical conductivity so that, when used as electrode in aqueous supercapacitors at high current density, it provides them with 25% more capacitance and 100% more power than the undoped carbon xerogels. The synthesis conditions, characteristics of the carbons and how these affect the electrical conductivity and performance of the materials in the supercapacitors are discussed.The authors gratefully acknowledge the financial support of the Ministerio de Economía y Competitividad of Spain, MINECO (Project CTQ2014-54772-P) and CTQ2013-44213-R), and Generalitat Valenciana for project PROMETEOII/2014/007Peer reviewedElsevierMinisterio de Economía y Competitividad (España)Generalitat ValencianaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201720172017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/147594reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2014-54772-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2013-44213-Rhttp://dx.doi.org/10.1016/j.carbon.2017.03.059Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1475942026-05-22T06:33:51Z
dc.title.none.fl_str_mv Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors
title Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors
spellingShingle Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors
Canal Rodríguez, María
Carbon xerogels
Graphene oxide
Graphene
Supercapacitor
title_short Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors
title_full Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors
title_fullStr Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors
title_full_unstemmed Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors
title_sort Graphene-doped carbon xerogel combining high electrical conductivity and surface area for optimized aqueous supercapacitors
dc.creator.none.fl_str_mv Canal Rodríguez, María
Arenillas de la Puente, Ana
Rey Raap, Natalia
Ramos Fernández, Gloria
Martín Gullón, Ignacio
Menéndez Díaz, José Ángel
author Canal Rodríguez, María
author_facet Canal Rodríguez, María
Arenillas de la Puente, Ana
Rey Raap, Natalia
Ramos Fernández, Gloria
Martín Gullón, Ignacio
Menéndez Díaz, José Ángel
author_role author
author2 Arenillas de la Puente, Ana
Rey Raap, Natalia
Ramos Fernández, Gloria
Martín Gullón, Ignacio
Menéndez Díaz, José Ángel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Generalitat Valenciana
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Carbon xerogels
Graphene oxide
Graphene
Supercapacitor
topic Carbon xerogels
Graphene oxide
Graphene
Supercapacitor
description A graphene doped carbon xerogel was synthesized by simply replacing the water (solvent) by an aqueous well-dispersed graphene oxide stable suspension in the precursor mixture used for the synthesis of the organic xerogel. During the carbonization of the organic xerogel, the graphene oxide sheets are reduced to graphene, which is embedded and well dispersed within the carbon xerogel matrix. Only a small minimum amount of graphene oxide is necessary to interconnect the graphene sheets throughout the carbon xerogel. This material has both a high porosity and an excellent electrical conductivity so that, when used as electrode in aqueous supercapacitors at high current density, it provides them with 25% more capacitance and 100% more power than the undoped carbon xerogels. The synthesis conditions, characteristics of the carbons and how these affect the electrical conductivity and performance of the materials in the supercapacitors are discussed.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/147594
url http://hdl.handle.net/10261/147594
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2014-54772-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2013-44213-R
http://dx.doi.org/10.1016/j.carbon.2017.03.059
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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