Electroactive graphene nanofluids for fast energy storage

Graphenes have been extensively studied as electrode materials for energy storage in supercapacitors and batteries, but always as solid electrodes. The conception and development of graphene electroactive nanofluids (ENFs) reported here for the first time provides a novel way to 'form' gra...

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Autores: Dubal, Deepak P.|||0000-0002-2337-676X, Gómez-Romero, Pedro|||0000-0002-6208-5340
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:204861
Acceso en línea:https://ddd.uab.cat/record/204861
https://dx.doi.org/urn:doi:10.1088/2053-1583/3/3/031004
Access Level:acceso abierto
Palabra clave:Electroactive nanofluids
Energy storage
Flow cells
Graphene nanofluids
Nanoelectrofuels
Reduced graphene oxide sols
Supercapacitors
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spelling Electroactive graphene nanofluids for fast energy storageDubal, Deepak P.|||0000-0002-2337-676XGómez-Romero, Pedro|||0000-0002-6208-5340Electroactive nanofluidsEnergy storageFlow cellsGraphene nanofluidsNanoelectrofuelsReduced graphene oxide solsSupercapacitorsGraphenes have been extensively studied as electrode materials for energy storage in supercapacitors and batteries, but always as solid electrodes. The conception and development of graphene electroactive nanofluids (ENFs) reported here for the first time provides a novel way to 'form' graphene electrodes and demonstrates proof of concept for the use of these liquid electrodes for energy storage in novel flow cells.Astabilized dispersion of reduced graphene oxide (rGO) in aqueous sulfuric acid solution was shown to have capacitive energy storage capabilities parallel to those of solid electrode supercapacitors (169 F g(rGO)) but working up to much faster rates (from 1mV s to the highest scan rate of 10 V s) in nanofluids with 0.025, 0.1 and 0.4 wt% rGO, featuring viscosities very close to that of water, thus being perfectly suitable for scalable flow cells. Our results provide proof of concept for this technology and include preliminary flow cell performance of rGO nanofluids under static and continuous flow conditions. Graphene nanofluids effectively behave as true liquid electrodes with very fast capacitive storage mechanism and herald the application not only of graphenes but also other 2D materials like MoS in nanofluids for energy storage and beyond. 22016-01-0120162016-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/204861https://dx.doi.org/urn:doi:10.1088/2053-1583/3/3/031004reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2014/SGR-1505Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 MAT2015-68394-Ropen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2048612026-06-06T12:50:31Z
dc.title.none.fl_str_mv Electroactive graphene nanofluids for fast energy storage
title Electroactive graphene nanofluids for fast energy storage
spellingShingle Electroactive graphene nanofluids for fast energy storage
Dubal, Deepak P.|||0000-0002-2337-676X
Electroactive nanofluids
Energy storage
Flow cells
Graphene nanofluids
Nanoelectrofuels
Reduced graphene oxide sols
Supercapacitors
title_short Electroactive graphene nanofluids for fast energy storage
title_full Electroactive graphene nanofluids for fast energy storage
title_fullStr Electroactive graphene nanofluids for fast energy storage
title_full_unstemmed Electroactive graphene nanofluids for fast energy storage
title_sort Electroactive graphene nanofluids for fast energy storage
dc.creator.none.fl_str_mv Dubal, Deepak P.|||0000-0002-2337-676X
Gómez-Romero, Pedro|||0000-0002-6208-5340
author Dubal, Deepak P.|||0000-0002-2337-676X
author_facet Dubal, Deepak P.|||0000-0002-2337-676X
Gómez-Romero, Pedro|||0000-0002-6208-5340
author_role author
author2 Gómez-Romero, Pedro|||0000-0002-6208-5340
author2_role author
dc.subject.none.fl_str_mv Electroactive nanofluids
Energy storage
Flow cells
Graphene nanofluids
Nanoelectrofuels
Reduced graphene oxide sols
Supercapacitors
topic Electroactive nanofluids
Energy storage
Flow cells
Graphene nanofluids
Nanoelectrofuels
Reduced graphene oxide sols
Supercapacitors
description Graphenes have been extensively studied as electrode materials for energy storage in supercapacitors and batteries, but always as solid electrodes. The conception and development of graphene electroactive nanofluids (ENFs) reported here for the first time provides a novel way to 'form' graphene electrodes and demonstrates proof of concept for the use of these liquid electrodes for energy storage in novel flow cells.Astabilized dispersion of reduced graphene oxide (rGO) in aqueous sulfuric acid solution was shown to have capacitive energy storage capabilities parallel to those of solid electrode supercapacitors (169 F g(rGO)) but working up to much faster rates (from 1mV s to the highest scan rate of 10 V s) in nanofluids with 0.025, 0.1 and 0.4 wt% rGO, featuring viscosities very close to that of water, thus being perfectly suitable for scalable flow cells. Our results provide proof of concept for this technology and include preliminary flow cell performance of rGO nanofluids under static and continuous flow conditions. Graphene nanofluids effectively behave as true liquid electrodes with very fast capacitive storage mechanism and herald the application not only of graphenes but also other 2D materials like MoS in nanofluids for energy storage and beyond.
publishDate 2016
dc.date.none.fl_str_mv 2
2016-01-01
2016
2016-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/204861
https://dx.doi.org/urn:doi:10.1088/2053-1583/3/3/031004
url https://ddd.uab.cat/record/204861
https://dx.doi.org/urn:doi:10.1088/2053-1583/3/3/031004
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2014/SGR-1505
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 MAT2015-68394-R
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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