A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study

Symmetric supercapacitors are fabricated by carbon nanofibers (CNF) and activated carbon (AC) using similar proportions of 7 wt% polyvinylidene fluoride (PVDF) polymer binder in an aqueous electrolyte. In this study, a comparison of porous texture and electrochemical performances between CNFs and AC...

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Autores: Daragmeh, Allan, Hussain, Shahzad, Saadeddin, Iyad, Servera Serapio, Llorenç, Xuriguera Martín, María Elena, Cornet i Calveras, Albert, Cirera Hernández, Albert
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/120725
Acceso en línea:https://hdl.handle.net/2445/120725
Access Level:acceso abierto
Palabra clave:Nanoestructures
Electròlits
Carbó activat
Nanostructures
Electrolytes
Activated carbon
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spelling A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative studyDaragmeh, AllanHussain, ShahzadSaadeddin, IyadServera Serapio, LlorençXuriguera Martín, María ElenaCornet i Calveras, AlbertCirera Hernández, AlbertNanoestructuresElectròlitsCarbó activatNanostructuresElectrolytesActivated carbonSymmetric supercapacitors are fabricated by carbon nanofibers (CNF) and activated carbon (AC) using similar proportions of 7 wt% polyvinylidene fluoride (PVDF) polymer binder in an aqueous electrolyte. In this study, a comparison of porous texture and electrochemical performances between CNFs and AC based supercapacitors was carried out. Electrodes were assembled in the cell without a current collector. The prepared electrodes of CNFs and AC present Brunauer-Emmett-Teller (BET) surface area of 83 and 1042 m2/g, respectively. The dominant pore structure for CNFs is mesoporous while for AC is micropore. The results showed that AC provided higher specific capacitance retention up to very fast scan rate of 500 mV/s. AC carbon had a specific capacitance of 334 F/g, and CNFs had 52 F/g at scan rate 5 mV/s in aqueous solution. Also, the results indicate the superior conductivity of CNFs in contrast to AC counterparts. The measured equivalent series resistance (ESR) showed a very small value for CNFs (0.28 Ω) in comparison to AC that has an ESR resistance of (3.72 Ω). Moreover, CNF delivered higher specific power (1860 W/kg) than that for AC (450 W/kg). On the other hand, AC gave higher specific energy (18.1 Wh/kg) than that for CNFs (2 Wh/kg).This indicates that the AC is good for energy applications. Whereas, CNF is good for power application. Indeed, the higher surface area will lead to higher specific capacitance and hence higher energy density for AC. For CNF, lower ESR is responsible for having higher power density.SpringerOpen2018201820172018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion10 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/120725Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1186/s11671-017-2415-zNanoscale Research Letters, 2017, vol. 12, num. 639https://doi.org/10.1186/s11671-017-2415-zcc-by (c) Daragmeh, Allan et al., 2017http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1207252026-05-29T05:05:01Z
dc.title.none.fl_str_mv A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study
title A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study
spellingShingle A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study
Daragmeh, Allan
Nanoestructures
Electròlits
Carbó activat
Nanostructures
Electrolytes
Activated carbon
title_short A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study
title_full A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study
title_fullStr A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study
title_full_unstemmed A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study
title_sort A study of carbon nanofibers and active carbon as symmetric supercapacitor in aqueous electrolyte: a comparative study
dc.creator.none.fl_str_mv Daragmeh, Allan
Hussain, Shahzad
Saadeddin, Iyad
Servera Serapio, Llorenç
Xuriguera Martín, María Elena
Cornet i Calveras, Albert
Cirera Hernández, Albert
author Daragmeh, Allan
author_facet Daragmeh, Allan
Hussain, Shahzad
Saadeddin, Iyad
Servera Serapio, Llorenç
Xuriguera Martín, María Elena
Cornet i Calveras, Albert
Cirera Hernández, Albert
author_role author
author2 Hussain, Shahzad
Saadeddin, Iyad
Servera Serapio, Llorenç
Xuriguera Martín, María Elena
Cornet i Calveras, Albert
Cirera Hernández, Albert
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Nanoestructures
Electròlits
Carbó activat
Nanostructures
Electrolytes
Activated carbon
topic Nanoestructures
Electròlits
Carbó activat
Nanostructures
Electrolytes
Activated carbon
description Symmetric supercapacitors are fabricated by carbon nanofibers (CNF) and activated carbon (AC) using similar proportions of 7 wt% polyvinylidene fluoride (PVDF) polymer binder in an aqueous electrolyte. In this study, a comparison of porous texture and electrochemical performances between CNFs and AC based supercapacitors was carried out. Electrodes were assembled in the cell without a current collector. The prepared electrodes of CNFs and AC present Brunauer-Emmett-Teller (BET) surface area of 83 and 1042 m2/g, respectively. The dominant pore structure for CNFs is mesoporous while for AC is micropore. The results showed that AC provided higher specific capacitance retention up to very fast scan rate of 500 mV/s. AC carbon had a specific capacitance of 334 F/g, and CNFs had 52 F/g at scan rate 5 mV/s in aqueous solution. Also, the results indicate the superior conductivity of CNFs in contrast to AC counterparts. The measured equivalent series resistance (ESR) showed a very small value for CNFs (0.28 Ω) in comparison to AC that has an ESR resistance of (3.72 Ω). Moreover, CNF delivered higher specific power (1860 W/kg) than that for AC (450 W/kg). On the other hand, AC gave higher specific energy (18.1 Wh/kg) than that for CNFs (2 Wh/kg).This indicates that the AC is good for energy applications. Whereas, CNF is good for power application. Indeed, the higher surface area will lead to higher specific capacitance and hence higher energy density for AC. For CNF, lower ESR is responsible for having higher power density.
publishDate 2017
dc.date.none.fl_str_mv 2017
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/120725
url https://hdl.handle.net/2445/120725
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1186/s11671-017-2415-z
Nanoscale Research Letters, 2017, vol. 12, num. 639
https://doi.org/10.1186/s11671-017-2415-z
dc.rights.none.fl_str_mv cc-by (c) Daragmeh, Allan et al., 2017
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Daragmeh, Allan et al., 2017
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv SpringerOpen
publisher.none.fl_str_mv SpringerOpen
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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