Low-cost supercapacitor based on colloidal graphite

Detalhes bibliográficos
Autor(a) principal: Dos Santos Klem, Maykel [UNESP]
Data de Publicação: 2021
Outros Autores: Nogueira, Gabriel Leonardo [UNESP], Alves, Neri [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/1980-5373-MR-2021-0013
http://hdl.handle.net/11449/233754
Resumo: Here we report the production and characterization of a low-cost supercapacitor with electrodes based on colloidal graphite. We characterized the as-prepared device in terms of cyclic voltammetry (CV), Galvanostatic charge/discharge (GCD), and impedance spectroscopy. The supercapacitor exhibited good electrochemical performance with a high capacitance of 22 F g-1for a discharge current of 2 mA. Long-term cyclability tests show that the device can keep about 85% of its capacitance after 500 cycles, even without encapsulation. We found power and energy densities of 110 W kg-1and 3 Wh kg-1, respectively. All the experimental results indicate that the colloidal graphite Aquadag® is a promising material for application in supercapacitors.
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spelling Low-cost supercapacitor based on colloidal graphiteAquadagColloidal GraphiteEnergy StorageSupercapacitorHere we report the production and characterization of a low-cost supercapacitor with electrodes based on colloidal graphite. We characterized the as-prepared device in terms of cyclic voltammetry (CV), Galvanostatic charge/discharge (GCD), and impedance spectroscopy. The supercapacitor exhibited good electrochemical performance with a high capacitance of 22 F g-1for a discharge current of 2 mA. Long-term cyclability tests show that the device can keep about 85% of its capacitance after 500 cycles, even without encapsulation. We found power and energy densities of 110 W kg-1and 3 Wh kg-1, respectively. All the experimental results indicate that the colloidal graphite Aquadag® is a promising material for application in supercapacitors.Universidade Estadual Paulista (UNESP) Faculdade de Tecnologia e Ciências, SPUniversidade Estadual Paulista (UNESP) Faculdade de Tecnologia e Ciências, SPUniversidade Estadual Paulista (UNESP)Dos Santos Klem, Maykel [UNESP]Nogueira, Gabriel Leonardo [UNESP]Alves, Neri [UNESP]2022-05-01T09:47:32Z2022-05-01T09:47:32Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1590/1980-5373-MR-2021-0013Materials Research, v. 24.1980-53731516-1439http://hdl.handle.net/11449/23375410.1590/1980-5373-MR-2021-00132-s2.0-85118165639Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Researchinfo:eu-repo/semantics/openAccess2024-06-19T12:44:23Zoai:repositorio.unesp.br:11449/233754Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:48:21.630829Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Low-cost supercapacitor based on colloidal graphite
title Low-cost supercapacitor based on colloidal graphite
spellingShingle Low-cost supercapacitor based on colloidal graphite
Dos Santos Klem, Maykel [UNESP]
Aquadag
Colloidal Graphite
Energy Storage
Supercapacitor
title_short Low-cost supercapacitor based on colloidal graphite
title_full Low-cost supercapacitor based on colloidal graphite
title_fullStr Low-cost supercapacitor based on colloidal graphite
title_full_unstemmed Low-cost supercapacitor based on colloidal graphite
title_sort Low-cost supercapacitor based on colloidal graphite
author Dos Santos Klem, Maykel [UNESP]
author_facet Dos Santos Klem, Maykel [UNESP]
Nogueira, Gabriel Leonardo [UNESP]
Alves, Neri [UNESP]
author_role author
author2 Nogueira, Gabriel Leonardo [UNESP]
Alves, Neri [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Dos Santos Klem, Maykel [UNESP]
Nogueira, Gabriel Leonardo [UNESP]
Alves, Neri [UNESP]
dc.subject.por.fl_str_mv Aquadag
Colloidal Graphite
Energy Storage
Supercapacitor
topic Aquadag
Colloidal Graphite
Energy Storage
Supercapacitor
description Here we report the production and characterization of a low-cost supercapacitor with electrodes based on colloidal graphite. We characterized the as-prepared device in terms of cyclic voltammetry (CV), Galvanostatic charge/discharge (GCD), and impedance spectroscopy. The supercapacitor exhibited good electrochemical performance with a high capacitance of 22 F g-1for a discharge current of 2 mA. Long-term cyclability tests show that the device can keep about 85% of its capacitance after 500 cycles, even without encapsulation. We found power and energy densities of 110 W kg-1and 3 Wh kg-1, respectively. All the experimental results indicate that the colloidal graphite Aquadag® is a promising material for application in supercapacitors.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
2022-05-01T09:47:32Z
2022-05-01T09:47:32Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/1980-5373-MR-2021-0013
Materials Research, v. 24.
1980-5373
1516-1439
http://hdl.handle.net/11449/233754
10.1590/1980-5373-MR-2021-0013
2-s2.0-85118165639
url http://dx.doi.org/10.1590/1980-5373-MR-2021-0013
http://hdl.handle.net/11449/233754
identifier_str_mv Materials Research, v. 24.
1980-5373
1516-1439
10.1590/1980-5373-MR-2021-0013
2-s2.0-85118165639
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Research
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128704057966592

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