High-performance nanostructured supercapacitors on a sponge

Handle URI:
http://hdl.handle.net/10754/561956
Title:
High-performance nanostructured supercapacitors on a sponge
Authors:
Chen, Wei; Baby, Rakhi Raghavan; Hu, Liangbing; Xie, Xing; Cui, Yi; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
A simple and scalable method has been developed to fabricate nanostructured MnO 2-carbon nanotube (CNT)-sponge hybrid electrodes. A novel supercapacitor, henceforth referred to as "sponge supercapacitor", has been fabricated using these hybrid electrodes with remarkable performance. A specific capacitance of 1230 F/g (based on the mass of MnO 2) can be reached. Capacitors based on CNT-sponge substrates (without MnO 2) can be operated even under a high scan rate of 200 V/s, and they exhibit outstanding cycle performance with only 2% degradation after 100000 cycles under a scan rate of 10 V/s. The MnO 2-CNT-sponge supercapacitors show only 4% of degradation after 10000 cycles at a charge-discharge specific current of 5 A/g. The specific power and energy of the MnO 2-CNT-sponge supercapacitors are high with values of 63 kW/kg and 31 Wh/kg, respectively. The attractive performances exhibited by these sponge supercapacitors make them potentially promising candidates for future energy storage systems. © 2011 American Chemical Society.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Advanced Membranes and Porous Materials Research Center; Functional Nanomaterials and Devices Research Group
Publisher:
American Chemical Society (ACS)
Journal:
Nano Letters
Issue Date:
14-Dec-2011
DOI:
10.1021/nl2023433
Type:
Article
ISSN:
15306984
Sponsors:
The authors thank for the characterization analysis provided by KAUST Advanced Imaging and Characterization Laboratory and Analytic Core Laboratory. W.C. acknowledges support from KAUST Graduate Fellowship. H.A. acknowledges the support from KAUST baseline fund. Y.C. acknowledges support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS11-001-12) and the Precourt Institute for Energy at Stanford. X.X. acknowledges support from the Stanford Graduate Fellowship.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorChen, Weien
dc.contributor.authorBaby, Rakhi Raghavanen
dc.contributor.authorHu, Liangbingen
dc.contributor.authorXie, Xingen
dc.contributor.authorCui, Yien
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2015-08-03T09:34:59Zen
dc.date.available2015-08-03T09:34:59Zen
dc.date.issued2011-12-14en
dc.identifier.issn15306984en
dc.identifier.doi10.1021/nl2023433en
dc.identifier.urihttp://hdl.handle.net/10754/561956en
dc.description.abstractA simple and scalable method has been developed to fabricate nanostructured MnO 2-carbon nanotube (CNT)-sponge hybrid electrodes. A novel supercapacitor, henceforth referred to as "sponge supercapacitor", has been fabricated using these hybrid electrodes with remarkable performance. A specific capacitance of 1230 F/g (based on the mass of MnO 2) can be reached. Capacitors based on CNT-sponge substrates (without MnO 2) can be operated even under a high scan rate of 200 V/s, and they exhibit outstanding cycle performance with only 2% degradation after 100000 cycles under a scan rate of 10 V/s. The MnO 2-CNT-sponge supercapacitors show only 4% of degradation after 10000 cycles at a charge-discharge specific current of 5 A/g. The specific power and energy of the MnO 2-CNT-sponge supercapacitors are high with values of 63 kW/kg and 31 Wh/kg, respectively. The attractive performances exhibited by these sponge supercapacitors make them potentially promising candidates for future energy storage systems. © 2011 American Chemical Society.en
dc.description.sponsorshipThe authors thank for the characterization analysis provided by KAUST Advanced Imaging and Characterization Laboratory and Analytic Core Laboratory. W.C. acknowledges support from KAUST Graduate Fellowship. H.A. acknowledges the support from KAUST baseline fund. Y.C. acknowledges support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS11-001-12) and the Precourt Institute for Energy at Stanford. X.X. acknowledges support from the Stanford Graduate Fellowship.en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectcarbon nanotubesen
dc.subjectenergy storageen
dc.subjectMnO 2en
dc.subjectspecific capacitanceen
dc.subjectspecific poweren
dc.subjectSponge supercapacitoren
dc.titleHigh-performance nanostructured supercapacitors on a spongeen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.identifier.journalNano Lettersen
dc.contributor.institutionDepartment of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United Statesen
dc.contributor.institutionDepartment of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, United Statesen
kaust.authorBaby, Rakhi Raghavanen
kaust.authorAlshareef, Husam N.en
kaust.authorChen, Weien
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