Electrochemical performance of a graphene polypyrrole nanocomposite as a supercapacitor electrode
Article
Article Title | Electrochemical performance of a graphene polypyrrole nanocomposite as a supercapacitor electrode |
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ERA Journal ID | 5163 |
Article Category | Article |
Authors | Bose, Saswata (Author), Kim, Nam Hoon (Author), Kuila, Tapas (Author), Lau, Kin-tak (Author) and Lee, Joong Hee (Author) |
Journal Title | Nanotechnology |
Journal Citation | 22 (29), p. 5202 |
Number of Pages | 9 |
Year | 2011 |
Place of Publication | Bristol, United Kingdom |
ISSN | 0957-4484 |
1361-6528 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0957-4484/22/29/295202 |
Web Address (URL) | http://iopscience.iop.org/0957-4484/22/29/295202/ |
Abstract | A unique nanoarchitecture has been established involving polypyrrole (PPy) and graphene nanosheets by in situ polymerization. The structural aspect of the nanocomposite has been determined by Raman spectroscopy. Atomic force microscopy reveals that the thickness of the synthesized graphene is ~ 2 nm. The dispersion of the nanometer-sized PPy has been demonstrated through transmission electron microscopy and the electrochemical performance of the nanocomposite has been illustrated by cyclic voltammetry measurements. Graphene nanosheet serves as a support material for the electrochemical utilization of PPy and also provides the path for electron transfer. The specific capacitance value of the nanocomposite has been determined to be 267 F g − 1 at a scan rate of 100 mV s − 1 compared to 137 mV s − 1 for PPy, suggesting the possible use of the nanocomposite as a supercapacitor electrode. After 500 cycles, only 10% decrease in specific capacitance as compared to initial value justifies the improved electrochemical cyclic stability of the nanocomposite. |
Keywords | cyclic stability; electrochemical performance; electron transfer; in-situ polymerization; initial values; nano-architecture; scan rates; specific capacitance; structural aspects; supercapacitor electrodes; support materials; voltammetry measurements |
ANZSRC Field of Research 2020 | 400907. Industrial electronics |
340306. Polymerisation mechanisms | |
401807. Nanomaterials | |
Public Notes | A Corrigendum for this article has been published in 2011 Nanotechnology 22(36) Sep 2011. Scopus ID for Erratum 2-s2.0-80051702871 |
Byline Affiliations | Jeonbuk National University, Korea |
Centre of Excellence in Engineered Fibre Composites | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q13q7/electrochemical-performance-of-a-graphene-polypyrrole-nanocomposite-as-a-supercapacitor-electrode
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