Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes

An asymmetric supercapacitor was fabricated by using CuO@reduced graphene oxide@sponge (CuO@rGO@SP) composites as the positive electrode and rGO@SP as the negative electrode in NaSO aqueous electrolyte. Macroporous and low-costing sponges were explored as skeletons to construct a homogeneous 3D inte...

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Autores: Dubal, Deepak P.|||0000-0002-2337-676X, Chodankar, Nilesh R.|||0000-0002-1174-2064, Gund, Girish S.|||0000-0002-2301-6051, Holze, Rudolf|||0000-0002-3516-1918, Lokhande, Chandrakant D., Gómez-Romero, Pedro|||0000-0002-6208-5340
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:307873
Acceso en línea:https://ddd.uab.cat/record/307873
https://dx.doi.org/urn:doi:10.1002/ente.201402170
Access Level:acceso abierto
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spelling Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodesDubal, Deepak P.|||0000-0002-2337-676XChodankar, Nilesh R.|||0000-0002-1174-2064Gund, Girish S.|||0000-0002-2301-6051Holze, Rudolf|||0000-0002-3516-1918Lokhande, Chandrakant D.Gómez-Romero, Pedro|||0000-0002-6208-5340An asymmetric supercapacitor was fabricated by using CuO@reduced graphene oxide@sponge (CuO@rGO@SP) composites as the positive electrode and rGO@SP as the negative electrode in NaSO aqueous electrolyte. Macroporous and low-costing sponges were explored as skeletons to construct a homogeneous 3D interconnected network of rGO. Initially, rGO was deposited on the sponge by the "dip-and-dry" method. Subsequently, a CuO nanosheet cluster was deposited by using the chemical bath deposition method on the rGO-coated sponge substrate. The CuO@rGO@SP electrodes could be operated even under a high scan rate of 200mVs and exhibited a maximum specific capacitance of 519Fg. An asymmetric supercapacitor device based on CuO@rGO@SP//rGO@SP could be cycled in the high voltage range of 1.7V and displayed high specific capacitance of 77.84Fg and a high energy density of 31.24Whkg. Impressively, this asymmetric device exhibited an excellent long cycle life and 83% of the specific capacitance was retained after 2000 cycles. 22015-01-0120152015-01-01Articlehttp://purl.org/coar/resource_type/c_6501SMURhttp://purl.org/coar/version/c_71e4c1898caa6e32info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/307873https://dx.doi.org/urn:doi:10.1002/ente.201402170reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:3078732026-06-06T12:50:31Z
dc.title.none.fl_str_mv Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes
title Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes
spellingShingle Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes
Dubal, Deepak P.|||0000-0002-2337-676X
title_short Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes
title_full Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes
title_fullStr Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes
title_full_unstemmed Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes
title_sort Asymmetric supercapacitors based on hybrid CuO@reduced graphene oxide@sponge versus reduced graphene oxide@sponge electrodes
dc.creator.none.fl_str_mv Dubal, Deepak P.|||0000-0002-2337-676X
Chodankar, Nilesh R.|||0000-0002-1174-2064
Gund, Girish S.|||0000-0002-2301-6051
Holze, Rudolf|||0000-0002-3516-1918
Lokhande, Chandrakant D.
Gómez-Romero, Pedro|||0000-0002-6208-5340
author Dubal, Deepak P.|||0000-0002-2337-676X
author_facet Dubal, Deepak P.|||0000-0002-2337-676X
Chodankar, Nilesh R.|||0000-0002-1174-2064
Gund, Girish S.|||0000-0002-2301-6051
Holze, Rudolf|||0000-0002-3516-1918
Lokhande, Chandrakant D.
Gómez-Romero, Pedro|||0000-0002-6208-5340
author_role author
author2 Chodankar, Nilesh R.|||0000-0002-1174-2064
Gund, Girish S.|||0000-0002-2301-6051
Holze, Rudolf|||0000-0002-3516-1918
Lokhande, Chandrakant D.
Gómez-Romero, Pedro|||0000-0002-6208-5340
author2_role author
author
author
author
author
description An asymmetric supercapacitor was fabricated by using CuO@reduced graphene oxide@sponge (CuO@rGO@SP) composites as the positive electrode and rGO@SP as the negative electrode in NaSO aqueous electrolyte. Macroporous and low-costing sponges were explored as skeletons to construct a homogeneous 3D interconnected network of rGO. Initially, rGO was deposited on the sponge by the "dip-and-dry" method. Subsequently, a CuO nanosheet cluster was deposited by using the chemical bath deposition method on the rGO-coated sponge substrate. The CuO@rGO@SP electrodes could be operated even under a high scan rate of 200mVs and exhibited a maximum specific capacitance of 519Fg. An asymmetric supercapacitor device based on CuO@rGO@SP//rGO@SP could be cycled in the high voltage range of 1.7V and displayed high specific capacitance of 77.84Fg and a high energy density of 31.24Whkg. Impressively, this asymmetric device exhibited an excellent long cycle life and 83% of the specific capacitance was retained after 2000 cycles.
publishDate 2015
dc.date.none.fl_str_mv 2
2015-01-01
2015
2015-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
SMUR
http://purl.org/coar/version/c_71e4c1898caa6e32
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/307873
https://dx.doi.org/urn:doi:10.1002/ente.201402170
url https://ddd.uab.cat/record/307873
https://dx.doi.org/urn:doi:10.1002/ente.201402170
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
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://rightsstatements.org/vocab/InC/1.0/
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
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