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

Kumar, Nanjundan Ashok, Choi, Hyun Jung, Bund, Andreas, Baek, Jong-Beom and Jeong, Yeon Tae (2012) Electrochemical supercapacitors based on a novel graphene/conjugated polymer composite system. Journal of Materials Chemistry, 22 24: 12268-12274. doi:10.1039/c2jm30701d

Author Kumar, Nanjundan Ashok
Choi, Hyun Jung
Bund, Andreas
Baek, Jong-Beom
Jeong, Yeon Tae
Title Electrochemical supercapacitors based on a novel graphene/conjugated polymer composite system
Journal name Journal of Materials Chemistry   Check publisher's open access policy
ISSN 0959-9428
Publication date 2012-06-28
Sub-type Article (original research)
DOI 10.1039/c2jm30701d
Open Access Status Not yet assessed
Volume 22
Issue 24
Start page 12268
End page 12274
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Formatted 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.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
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