Symmetrical MnO2-carbon nanotube-textile nanostructures for wearable pseudocapacitors with high mass loading

Handle URI:
http://hdl.handle.net/10754/561928
Title:
Symmetrical MnO2-carbon nanotube-textile nanostructures for wearable pseudocapacitors with high mass loading
Authors:
Hu, Liangbing; Chen, Wei; Xie, Xing; Liu, Nian; Yang, Yuan; Wu, Hui; Yao, Yan; Pasta, Mauro; Alshareef, Husam N. ( 0000-0001-5029-2142 ) ; Cui, Yi
Abstract:
While MnO2 is a promising material for pseudocapacitor applications due to its high specific capacity and low cost, MnO2 electrodes suffer from their low electrical and ionic conductivities. In this article, we report a structure where MnO2 nanoflowers were conformally electrodeposited onto carbon nanotube (CNT)-enabled conductive textile fibers. Such nanostructures effectively decrease the ion diffusion and charge transport resistance in the electrode. For a given areal mass loading, the thickness of MnO2 on conductive textile fibers is much smaller than that on a flat metal substrate. Such a porous structure also allows a large mass loading, up to 8.3 mg/cm2, which leads to a high areal capacitance of 2.8 F/cm2 at a scan rate of 0.05 mV/s. Full cells were demonstrated, where the MnO2-CNT-textile was used as a positive electrode, reduced MnO2-CNT-textile as a negative electrode, and 0.5 M Na2SO4 in water as the electrolyte. The resulting pseudocapacitor shows promising results as a low-cost energy storage solution and an attractive wearable power. © 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
Journal:
ACS Nano
Issue Date:
22-Nov-2011
DOI:
10.1021/nn203085j
Type:
Article
ISSN:
19360851
Sponsors:
We thank Dr. Judy Cha for her helpful discussion and assistance in some sample characterizations. W.C. thanks the support from a KAUST Graduate Fellowship. X.X. acknowledges the support from the Stanford Graduate Fellowship. Y.C. acknowledges the funding support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-11-001-12).
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.authorHu, Liangbingen
dc.contributor.authorChen, Weien
dc.contributor.authorXie, Xingen
dc.contributor.authorLiu, Nianen
dc.contributor.authorYang, Yuanen
dc.contributor.authorWu, Huien
dc.contributor.authorYao, Yanen
dc.contributor.authorPasta, Mauroen
dc.contributor.authorAlshareef, Husam N.en
dc.contributor.authorCui, Yien
dc.date.accessioned2015-08-03T09:34:19Zen
dc.date.available2015-08-03T09:34:19Zen
dc.date.issued2011-11-22en
dc.identifier.issn19360851en
dc.identifier.doi10.1021/nn203085jen
dc.identifier.urihttp://hdl.handle.net/10754/561928en
dc.description.abstractWhile MnO2 is a promising material for pseudocapacitor applications due to its high specific capacity and low cost, MnO2 electrodes suffer from their low electrical and ionic conductivities. In this article, we report a structure where MnO2 nanoflowers were conformally electrodeposited onto carbon nanotube (CNT)-enabled conductive textile fibers. Such nanostructures effectively decrease the ion diffusion and charge transport resistance in the electrode. For a given areal mass loading, the thickness of MnO2 on conductive textile fibers is much smaller than that on a flat metal substrate. Such a porous structure also allows a large mass loading, up to 8.3 mg/cm2, which leads to a high areal capacitance of 2.8 F/cm2 at a scan rate of 0.05 mV/s. Full cells were demonstrated, where the MnO2-CNT-textile was used as a positive electrode, reduced MnO2-CNT-textile as a negative electrode, and 0.5 M Na2SO4 in water as the electrolyte. The resulting pseudocapacitor shows promising results as a low-cost energy storage solution and an attractive wearable power. © 2011 American Chemical Society.en
dc.description.sponsorshipWe thank Dr. Judy Cha for her helpful discussion and assistance in some sample characterizations. W.C. thanks the support from a KAUST Graduate Fellowship. X.X. acknowledges the support from the Stanford Graduate Fellowship. Y.C. acknowledges the funding support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-11-001-12).en
dc.publisherAmerican Chemical Societyen
dc.subjectcarbon nanotubeen
dc.subjectlarge-scaleen
dc.subjectMnO2en
dc.subjectpseudocapacitoren
dc.subjecttextileen
dc.subjectwearable deviceen
dc.titleSymmetrical MnO2-carbon nanotube-textile nanostructures for wearable pseudocapacitors with high mass loadingen
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.journalACS Nanoen
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
dc.contributor.institutionDepartment of Chemistry, Stanford University, Stanford, CA 94305, United Statesen
kaust.authorAlshareef, Husam N.en
kaust.authorChen, Weien
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