Sugarcane molasses as a pseudocapacitive material for supercapacitors

Oxygen-rich carbons were obtained from sugarcane molasses by two methods: direct carbonisation on one hand, and hydrothermal carbonisation and subsequent pyrolysis on the other hand. As no activation treatments were applied, the porous texture was poorly developed and mainly composed of ultramicropo...

Descripción completa

Detalles Bibliográficos
Autores: Sanchez-Sanchez, A., de Yuso, A.M., Braghiroli, F.L., Izquierdo, M.T., Alvarez, E.D., Perez-Cappe, E., Mosqueda, Y., Fierro, V., Celzard, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:70906
Acceso en línea:http://zaguan.unizar.es/record/70906
Access Level:acceso abierto
id ES_f4e14d3e94ca7256a30df7d4f302348c
oai_identifier_str oai:zaguan.unizar.es:70906
network_acronym_str ES
network_name_str España
repository_id_str
spelling Sugarcane molasses as a pseudocapacitive material for supercapacitorsSanchez-Sanchez, A.de Yuso, A.M.Braghiroli, F.L.Izquierdo, M.T.Alvarez, E.D.Perez-Cappe, E.Mosqueda, Y.Fierro, V.Celzard, A.Oxygen-rich carbons were obtained from sugarcane molasses by two methods: direct carbonisation on one hand, and hydrothermal carbonisation and subsequent pyrolysis on the other hand. As no activation treatments were applied, the porous texture was poorly developed and mainly composed of ultramicropores with restricted access to electrolyte ions. Despite this, the directly carbonised molasses exhibited specific capacitances up to 153 F g(-1) at 0.5 mV s(-1) in 1 M H2SO4 electrolyte when tested as electrodes in a three-electrode system. Given the low specific surface areas of the carbons, the capacitance values were mainly assigned to their pseudocapacitance contributions. The latter were more adequately estimated by considering the NLDFT surface area (SNLDFT) than the BET area (ABET) due to the narrow porosity of the materials. Maximum values of pseudocapacitance contribution of 35.2% were attained for the carbon with a SNLDFT of 178 m(2) g(-1), which were explained by the high concentrations of surface oxygen groups, such as quinones and carbonyls.2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/70906reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/ES/FEDER/CHEERSinfo:eu-repo/semantics/openAccessoai:zaguan.unizar.es:709062026-05-29T13:59:51Z
dc.title.none.fl_str_mv Sugarcane molasses as a pseudocapacitive material for supercapacitors
title Sugarcane molasses as a pseudocapacitive material for supercapacitors
spellingShingle Sugarcane molasses as a pseudocapacitive material for supercapacitors
Sanchez-Sanchez, A.
title_short Sugarcane molasses as a pseudocapacitive material for supercapacitors
title_full Sugarcane molasses as a pseudocapacitive material for supercapacitors
title_fullStr Sugarcane molasses as a pseudocapacitive material for supercapacitors
title_full_unstemmed Sugarcane molasses as a pseudocapacitive material for supercapacitors
title_sort Sugarcane molasses as a pseudocapacitive material for supercapacitors
dc.creator.none.fl_str_mv Sanchez-Sanchez, A.
de Yuso, A.M.
Braghiroli, F.L.
Izquierdo, M.T.
Alvarez, E.D.
Perez-Cappe, E.
Mosqueda, Y.
Fierro, V.
Celzard, A.
author Sanchez-Sanchez, A.
author_facet Sanchez-Sanchez, A.
de Yuso, A.M.
Braghiroli, F.L.
Izquierdo, M.T.
Alvarez, E.D.
Perez-Cappe, E.
Mosqueda, Y.
Fierro, V.
Celzard, A.
author_role author
author2 de Yuso, A.M.
Braghiroli, F.L.
Izquierdo, M.T.
Alvarez, E.D.
Perez-Cappe, E.
Mosqueda, Y.
Fierro, V.
Celzard, A.
author2_role author
author
author
author
author
author
author
author
description Oxygen-rich carbons were obtained from sugarcane molasses by two methods: direct carbonisation on one hand, and hydrothermal carbonisation and subsequent pyrolysis on the other hand. As no activation treatments were applied, the porous texture was poorly developed and mainly composed of ultramicropores with restricted access to electrolyte ions. Despite this, the directly carbonised molasses exhibited specific capacitances up to 153 F g(-1) at 0.5 mV s(-1) in 1 M H2SO4 electrolyte when tested as electrodes in a three-electrode system. Given the low specific surface areas of the carbons, the capacitance values were mainly assigned to their pseudocapacitance contributions. The latter were more adequately estimated by considering the NLDFT surface area (SNLDFT) than the BET area (ABET) due to the narrow porosity of the materials. Maximum values of pseudocapacitance contribution of 35.2% were attained for the carbon with a SNLDFT of 178 m(2) g(-1), which were explained by the high concentrations of surface oxygen groups, such as quinones and carbonyls.
publishDate 2016
dc.date.none.fl_str_mv 2016
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 http://zaguan.unizar.es/record/70906
url http://zaguan.unizar.es/record/70906
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/FEDER/CHEERS
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv
publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869424512366280704
score 15.300719

Similares en LA Referencia