Novel preparation of expanded nano-graphene-based electrodes for EDLC and their improved electrochemical performance

The electrode raw materials in this work were composed of expanded nano-graphene (ENG)-based active carbon (YP50F) named YEG as an active material; Super-P carbon black (SPB) as an electric conductor; and styrene-butadiene rubber (SBR), sodium salt of carboxymethyl cellulose (CMC), and polytetrafluo...

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Bibliographic Details
Published in:Fullerenes, nanotubes, and carbon nanostructures nanotubes, and carbon nanostructures, 2016-07, Vol.24 (7), p.446-454
Main Authors: Zhu, Lei, Kim, Ick-Jun, Yang, Sun-Hye, Oh, Won-Chun
Format: Article
Language:English
Subjects:
EDLC
electrochemical performance
expanded nano-graphene
FE-SEM
raman
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Summary:The electrode raw materials in this work were composed of expanded nano-graphene (ENG)-based active carbon (YP50F) named YEG as an active material; Super-P carbon black (SPB) as an electric conductor; and styrene-butadiene rubber (SBR), sodium salt of carboxymethyl cellulose (CMC), and polytetrafluoroethylene ((C 2 F 4 )n, PTFE) as mixed binder materials. We characterized the prepared electrodes by X-ray diffraction, scanning electron microscopy, and Raman spectroscopic techniques. Finally, we examined the electrochemical performances of carbon materials in an electrolyte solution of tetraethylammonium tetrafluoroborate ((C 2 H 5 ) 4 NBF 4 , TEABF4) in propylene carbonate (C 4 H 6 O 3 , PC). The specific capacitance remains the same for smaller values of YEG in the composite electrodes. These results also provide evidence of the optimum loading of ENG in future graphene-based EDLCs.
ISSN:1536-383X
1536-4046
DOI:10.1080/1536383X.2016.1177791