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Article: Varying carbon structures templated from KIT-6 for optimum electrochemical capacitance
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TitleVarying carbon structures templated from KIT-6 for optimum electrochemical capacitance
 
AuthorsLi, F1
van der Laak, N1
Ting, SW1
Chan, KY1
 
KeywordsCapacitive performance
Mesoporous carbon
Power/energy density
Supercapacitor
 
Issue Date2010
 
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/electacta
 
CitationElectrochimica Acta, 2010, v. 55 n. 8, p. 2817-2823 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.electacta.2009.12.098
 
AbstractBicontinuous ordered mesoporous carbons (OMCs), fabricated from a KIT-6 template using aluminosilicate as catalyst and furfuryl alcohol as carbon source, were successfully prepared and studied as electrodes in supercapacitors. Their structures were characterized by transmission electron microscopy (TEM), small-angle X-ray diffraction (SAXD) and N2 cryosorption methods. Using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), the capacitive performance of the OMCs was found to be strongly dependent on the mesostructure. Specific capacitance value greater than 130 F g-1 at 20 mV s-1 were obtained from an OMC that featured high surface area with the existence of additional large pores to enhance the specific capacitance at high discharge rate. For the OMC with the best performance, we found that a power density as high as 4.5 kW kg-1 at an energy density of 6.1 Wh kg-1 can be delivered when the discharge current density is 20 A g-1 and can also be continuously charged and discharged with little variation in capacitance after 2500 cycles. These results indicate that this OMC with optimized structure has potential to be used as a power component in electric vehicles. © 2010 Elsevier Ltd. All rights reserved.
 
ISSN0013-4686
2013 Impact Factor: 4.086
2013 SCImago Journal Rankings: 1.529
 
DOIhttp://dx.doi.org/10.1016/j.electacta.2009.12.098
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorLi, F
 
dc.contributor.authorvan der Laak, N
 
dc.contributor.authorTing, SW
 
dc.contributor.authorChan, KY
 
dc.date.accessioned2012-10-08T03:18:53Z
 
dc.date.available2012-10-08T03:18:53Z
 
dc.date.issued2010
 
dc.description.abstractBicontinuous ordered mesoporous carbons (OMCs), fabricated from a KIT-6 template using aluminosilicate as catalyst and furfuryl alcohol as carbon source, were successfully prepared and studied as electrodes in supercapacitors. Their structures were characterized by transmission electron microscopy (TEM), small-angle X-ray diffraction (SAXD) and N2 cryosorption methods. Using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), the capacitive performance of the OMCs was found to be strongly dependent on the mesostructure. Specific capacitance value greater than 130 F g-1 at 20 mV s-1 were obtained from an OMC that featured high surface area with the existence of additional large pores to enhance the specific capacitance at high discharge rate. For the OMC with the best performance, we found that a power density as high as 4.5 kW kg-1 at an energy density of 6.1 Wh kg-1 can be delivered when the discharge current density is 20 A g-1 and can also be continuously charged and discharged with little variation in capacitance after 2500 cycles. These results indicate that this OMC with optimized structure has potential to be used as a power component in electric vehicles. © 2010 Elsevier Ltd. All rights reserved.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationElectrochimica Acta, 2010, v. 55 n. 8, p. 2817-2823 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.electacta.2009.12.098
 
dc.identifier.citeulike6538875
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.electacta.2009.12.098
 
dc.identifier.epage2823
 
dc.identifier.hkuros180141
 
dc.identifier.issn0013-4686
2013 Impact Factor: 4.086
2013 SCImago Journal Rankings: 1.529
 
dc.identifier.issue8
 
dc.identifier.scopuseid_2-s2.0-76449113022
 
dc.identifier.spage2817
 
dc.identifier.urihttp://hdl.handle.net/10722/168434
 
dc.identifier.volume55
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/electacta
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofElectrochimica Acta
 
dc.relation.referencesReferences in Scopus
 
dc.subjectCapacitive performance
 
dc.subjectMesoporous carbon
 
dc.subjectPower/energy density
 
dc.subjectSupercapacitor
 
dc.titleVarying carbon structures templated from KIT-6 for optimum electrochemical capacitance
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong