Morphology-dependent enhancement of the pseudocapacitance of template-guided tunable polyaniline nanostructures

Handle URI:
http://hdl.handle.net/10754/562873
Title:
Morphology-dependent enhancement of the pseudocapacitance of template-guided tunable polyaniline nanostructures
Authors:
Chen, Wei; Baby, Rakhi Raghavan; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
Polyaniline is one of the most investigated conducting polymers as supercapacitor material for energy storage applications. The preparation of nanostructured polyaniline with well-controlled morphology is crucial to obtaining good supercapacitor performance. We present here a facile chemical process to produce polyaniline nanostructures with three different morphologies (i.e., nanofibers, nanospheres, and nanotubes) by utilizing the corresponding tunable morphology of MnO2 reactive templates. A growth mechanism is proposed to explain the evolution of polyaniline morphology based on the reactive templates. The morphology-induced improvement in the electrochemical performance of polyaniline pseudocapacitors is as large as 51% due to the much enhanced surface area and the porous nature of the template-guided polyaniline nanostructures. In addition, and for the first time, a redox-active electrolyte is applied to the polyaniline pseudocapacitors to achieve significant enhancement of pseudocapacitance. Compared to the conventional electrolyte, the enhancement of pseudocapacitance in the redox-active electrolyte is 49%-78%, depending on the specific polyaniline morphology, reaching the highest reported capacitance of 896 F/g for polyaniline full cells so far. © 2013 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:
The Journal of Physical Chemistry C
Issue Date:
25-Jul-2013
DOI:
10.1021/jp405300p
Type:
Article
ISSN:
19327447
Sponsors:
The authors thank Olga Zausalina for the graphical illustration design. W.C. acknowledges support from the KAUST Graduate Fellowship. R.B.R. acknowledges support from SABIC Postdoctoral Fellowship. HA acknowledges the support from the KAUST baseline fund.
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.authorAlshareef, Husam N.en
dc.date.accessioned2015-08-03T11:13:39Zen
dc.date.available2015-08-03T11:13:39Zen
dc.date.issued2013-07-25en
dc.identifier.issn19327447en
dc.identifier.doi10.1021/jp405300pen
dc.identifier.urihttp://hdl.handle.net/10754/562873en
dc.description.abstractPolyaniline is one of the most investigated conducting polymers as supercapacitor material for energy storage applications. The preparation of nanostructured polyaniline with well-controlled morphology is crucial to obtaining good supercapacitor performance. We present here a facile chemical process to produce polyaniline nanostructures with three different morphologies (i.e., nanofibers, nanospheres, and nanotubes) by utilizing the corresponding tunable morphology of MnO2 reactive templates. A growth mechanism is proposed to explain the evolution of polyaniline morphology based on the reactive templates. The morphology-induced improvement in the electrochemical performance of polyaniline pseudocapacitors is as large as 51% due to the much enhanced surface area and the porous nature of the template-guided polyaniline nanostructures. In addition, and for the first time, a redox-active electrolyte is applied to the polyaniline pseudocapacitors to achieve significant enhancement of pseudocapacitance. Compared to the conventional electrolyte, the enhancement of pseudocapacitance in the redox-active electrolyte is 49%-78%, depending on the specific polyaniline morphology, reaching the highest reported capacitance of 896 F/g for polyaniline full cells so far. © 2013 American Chemical Society.en
dc.description.sponsorshipThe authors thank Olga Zausalina for the graphical illustration design. W.C. acknowledges support from the KAUST Graduate Fellowship. R.B.R. acknowledges support from SABIC Postdoctoral Fellowship. HA acknowledges the support from the KAUST baseline fund.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleMorphology-dependent enhancement of the pseudocapacitance of template-guided tunable polyaniline nanostructuresen
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.journalThe Journal of Physical Chemistry Cen
kaust.authorBaby, Rakhi Raghavanen
kaust.authorAlshareef, Husam N.en
kaust.authorChen, Weien
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