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Article: Varying carbon structures templated from KIT-6 for optimum electrochemical capacitance

TitleVarying carbon structures templated from KIT-6 for optimum electrochemical capacitance
Authors
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
Citation
Electrochimica Acta, 2010, v. 55 n. 8, p. 2817-2823 How to Cite?
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.
Persistent Identifierhttp://hdl.handle.net/10722/168434
ISSN
2014 Impact Factor: 4.504
2014 SCImago Journal Rankings: 1.288
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Fen_HK
dc.contributor.authorvan der Laak, Nen_HK
dc.contributor.authorTing, SWen_HK
dc.contributor.authorChan, KYen_HK
dc.date.accessioned2012-10-08T03:18:53Z-
dc.date.available2012-10-08T03:18:53Z-
dc.date.issued2010en_HK
dc.identifier.citationElectrochimica Acta, 2010, v. 55 n. 8, p. 2817-2823en_HK
dc.identifier.issn0013-4686en_HK
dc.identifier.urihttp://hdl.handle.net/10722/168434-
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.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/electactaen_HK
dc.relation.ispartofElectrochimica Actaen_HK
dc.subjectCapacitive performanceen_HK
dc.subjectMesoporous carbonen_HK
dc.subjectPower/energy densityen_HK
dc.subjectSupercapacitoren_HK
dc.titleVarying carbon structures templated from KIT-6 for optimum electrochemical capacitanceen_HK
dc.typeArticleen_HK
dc.identifier.emailvan der Laak, N: n.vanderlaak@gmail.comen_HK
dc.identifier.emailChan, KY: hrsccky@hku.hken_HK
dc.identifier.authorityvan der Laak, N=rp00795en_HK
dc.identifier.authorityChan, KY=rp00662en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.electacta.2009.12.098en_HK
dc.identifier.scopuseid_2-s2.0-76449113022en_HK
dc.identifier.hkuros180141-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-76449113022&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume55en_HK
dc.identifier.issue8en_HK
dc.identifier.spage2817en_HK
dc.identifier.epage2823en_HK
dc.identifier.isiWOS:000275985700031-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLi, F=35620639500en_HK
dc.identifier.scopusauthoridvan der Laak, N=13404932900en_HK
dc.identifier.scopusauthoridTing, SW=25822814400en_HK
dc.identifier.scopusauthoridChan, KY=7406034142en_HK
dc.identifier.citeulike6538875-

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