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Author

Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

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Electrochemical supercapacitors based on a novel graphene/conjugated polymer composite system

Cited 23 times inthomson ciCited 20 times inthomson ci
Title
Electrochemical supercapacitors based on a novel graphene/conjugated polymer composite system
Author
Kumar, Nanjundan AshokChoi, Hyun JungBund, AndreasBaek, Jong-BeomJeong, Yeon Tae
Keywords
Acyl chlorides; Analytical techniques; Covalent functionalizations; Electrical conductivity; Electrochemical supercapacitor; Esterification reactions; Functionalized; Functionalized monomers; Graphene oxides; Hydroxyl groups; Oxidative polymerization; Poly(3 ,4-propylenedioxythiophene) (PProDOT); Polymer composite; Room temperature; Scan rates; Specific capacitance; Super capacitor
Issue Date
2012
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY, v.22, no.24, pp.12268 - 12274
Abstract
An efficient method for the preparation of a highly conducting hybrid material from graphene oxide nanosheets (GNS) and a novel conjugated polymer, poly(3,4-propylenedioxythiophene), is demonstrated. A functionalized monomer based on 3,4-propylenedioxythiophene, namely ProDOT-OH, was covalently functionalized with GNS, followed by oxidative polymerization to prepare GNS-f-PProDOT composites. The covalent functionalization process of GNS with the monomer ProDOT-OH was activated through the simple esterification reaction between the acyl chloride derivative on the nanosheets and the pendant hydroxyl group present in the monomer. Furthermore, the monomer functionalized GNS were co-polymerized with thiophene resulting in hybrid graphene nanostructures coated with highly conducting co-polymers with a room temperature electrical conductivity as high as 22.5 S cm(-1). The resulting hybrid materials were characterized using a range of analytical techniques. The specific capacitance value of the composite and the co-polymer hybrids at a scan rate of 10 mV s(-1) has been determined to be 158 and 201 F g(-1) respectively and hence particularly promising for supercapacitors.
URI
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DOI
http://dx.doi.org/10.1039/c2jm30701d
ISSN
0959-9428
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