A study on the electrochemical performance of nitrogen and oxygen co-doped carbon dots derived from a green precursor for supercapacitor applications

Carbon dots (CDs) finds applications in the field of optoelectronics, energy conversion, energy storage, etc. In this work, the electrochemical properties of CDs (obtained from a green source, lignite) were established to employ them for supercapacitor application. CDs-modified carbon felt working e...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2017-12, Vol.28 (24), p.18489-18496
Main Authors: Dharmalingam, P., Ramanan, V., Karthikeyan, G. G., Palani, N. S., Ilangovan, R., Ramamurthy, P.
Format: Article
Language:English
Subjects:
Alternative energy
Capacitance
Carbon
Carbon dots
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electrochemical analysis
Electrodes
Electrolytes
Energy conversion
Energy storage
Ethanol
Graphene
Lasers
Lignite
Materials Science
Nanotechnology
Nitrogen
Optical and Electronic Materials
Optoelectronics
Precursors
Quantum dots
Solvents
Supercapacitors
X-rays
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Summary:Carbon dots (CDs) finds applications in the field of optoelectronics, energy conversion, energy storage, etc. In this work, the electrochemical properties of CDs (obtained from a green source, lignite) were established to employ them for supercapacitor application. CDs-modified carbon felt working electrode was fabricated and its electrochemical properties were studied and compared with lignite-modified carbon felt working electrode. The CDs-modified electrode showed a superior capacitance compared with lignite-modified electrode which was evidenced from their cyclic voltammograms, electron impedance spectroscopy, and charge/discharge studies. The highest observed specific capacitance value for CDs-based electrode is 30.5 F g −1 which is 14 times higher than that of lignite-modified electrode.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-017-7796-3