Enhancing the Supercapacitor Performance of Graphene/MnO 2 Nanostructured Electrodes by Conductive Wrapping

Handle URI:
http://hdl.handle.net/10754/598198
Title:
Enhancing the Supercapacitor Performance of Graphene/MnO 2 Nanostructured Electrodes by Conductive Wrapping
Authors:
Yu, Guihua; Hu, Liangbing; Liu, Nian; Wang, Huiliang; Vosgueritchian, Michael; Yang, Yuan; Cui, Yi; Bao, Zhenan
Abstract:
MnO2 is considered one of the most promising pseudocapactive materials for high-performance supercapacitors given its high theoretical specific capacitance, low-cost, environmental benignity, and natural abundance. However, MnO2 electrodes often suffer from poor electronic and ionic conductivities, resulting in their limited performance in power density and cycling. Here we developed a "conductive wrapping" method to greatly improve the supercapacitor performance of graphene/MnO2-based nanostructured electrodes. By three-dimensional (3D) conductive wrapping of graphene/MnO2 nanostructures with carbon nanotubes or conducting polymer, specific capacitance of the electrodes (considering total mass of active materials) has substantially increased by ∼20% and ∼45%, respectively, with values as high as ∼380 F/g achieved. Moreover, these ternary composite electrodes have also exhibited excellent cycling performance with >95% capacitance retention over 3000 cycles. This 3D conductive wrapping approach represents an exciting direction for enhancing the device performance of metal oxide-based electrochemical supercapacitors and can be generalized for designing next-generation high-performance energy storage devices. © 2011 American Chemical Society.
Citation:
Yu G, Hu L, Liu N, Wang H, Vosgueritchian M, et al. (2011) Enhancing the Supercapacitor Performance of Graphene/MnO 2 Nanostructured Electrodes by Conductive Wrapping . Nano Lett 11: 4438–4442. Available: http://dx.doi.org/10.1021/nl2026635.
Publisher:
American Chemical Society (ACS)
Journal:
Nano Letters
KAUST Grant Number:
KUS-I1-001-12
Issue Date:
12-Oct-2011
DOI:
10.1021/nl2026635
PubMed ID:
21942427
Type:
Article
ISSN:
1530-6984; 1530-6992
Sponsors:
Y.C. and Z.B. acknowledge the funding support from the Precourt Institute for Energy at Stanford University. Y.C. also acknowledges the funding support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-I1-001-12).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorYu, Guihuaen
dc.contributor.authorHu, Liangbingen
dc.contributor.authorLiu, Nianen
dc.contributor.authorWang, Huiliangen
dc.contributor.authorVosgueritchian, Michaelen
dc.contributor.authorYang, Yuanen
dc.contributor.authorCui, Yien
dc.contributor.authorBao, Zhenanen
dc.date.accessioned2016-02-25T13:14:32Zen
dc.date.available2016-02-25T13:14:32Zen
dc.date.issued2011-10-12en
dc.identifier.citationYu G, Hu L, Liu N, Wang H, Vosgueritchian M, et al. (2011) Enhancing the Supercapacitor Performance of Graphene/MnO 2 Nanostructured Electrodes by Conductive Wrapping . Nano Lett 11: 4438–4442. Available: http://dx.doi.org/10.1021/nl2026635.en
dc.identifier.issn1530-6984en
dc.identifier.issn1530-6992en
dc.identifier.pmid21942427en
dc.identifier.doi10.1021/nl2026635en
dc.identifier.urihttp://hdl.handle.net/10754/598198en
dc.description.abstractMnO2 is considered one of the most promising pseudocapactive materials for high-performance supercapacitors given its high theoretical specific capacitance, low-cost, environmental benignity, and natural abundance. However, MnO2 electrodes often suffer from poor electronic and ionic conductivities, resulting in their limited performance in power density and cycling. Here we developed a "conductive wrapping" method to greatly improve the supercapacitor performance of graphene/MnO2-based nanostructured electrodes. By three-dimensional (3D) conductive wrapping of graphene/MnO2 nanostructures with carbon nanotubes or conducting polymer, specific capacitance of the electrodes (considering total mass of active materials) has substantially increased by ∼20% and ∼45%, respectively, with values as high as ∼380 F/g achieved. Moreover, these ternary composite electrodes have also exhibited excellent cycling performance with >95% capacitance retention over 3000 cycles. This 3D conductive wrapping approach represents an exciting direction for enhancing the device performance of metal oxide-based electrochemical supercapacitors and can be generalized for designing next-generation high-performance energy storage devices. © 2011 American Chemical Society.en
dc.description.sponsorshipY.C. and Z.B. acknowledge the funding support from the Precourt Institute for Energy at Stanford University. Y.C. also acknowledges the funding support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-I1-001-12).en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectcarbon nanotubesen
dc.subjectconductive polymeren
dc.subjectgrapheneen
dc.subjectMnO2en
dc.subjectSupercapacitor electrodesen
dc.titleEnhancing the Supercapacitor Performance of Graphene/MnO 2 Nanostructured Electrodes by Conductive Wrappingen
dc.typeArticleen
dc.identifier.journalNano Lettersen
dc.contributor.institutionStanford University, Palo Alto, United Statesen
kaust.grant.numberKUS-I1-001-12en
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