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Issue 46, 2012
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Electrochemically exfoliated graphene using 9-anthracene carboxylic acid for supercapacitor application

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Abstract

A green approach for the electrochemical exfoliation of graphite to graphene is reported. After the exfoliation of graphite, the 9-anthracene carboxylate ion (ACA), which was used as an electrolyte, was adsorbed on the surface of graphene through noncovalent interaction. X-ray diffraction analysis confirms the exfoliation of graphite to graphene. Atomic force microscopy and transmission electron microscopy analyses show the formation of single layer graphene. Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and Raman spectroscopy confirm the noncovalent attachment of ACA on the surface of graphene. The 9-anthracene carboxylic acid modified graphene (ACEG) shows good electrochemical performance with a high specific capacitance of 577 F g−1 in 1 M H2SO4. The ACEG electrode shows 83.4% retention in specific capacitance after 1000 charge–discharge cycles. A high coulombic efficiency of 102% is also observed indicating its suitability as energy storage electrode materials.

Graphical abstract: Electrochemically exfoliated graphene using 9-anthracene carboxylic acid for supercapacitor application

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Publication details

The article was received on 30 May 2012, accepted on 06 Aug 2012 and first published on 06 Aug 2012


Article type: Paper
DOI: 10.1039/C2JM34838A
Citation: J. Mater. Chem., 2012,22, 24403-24410
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    Electrochemically exfoliated graphene using 9-anthracene carboxylic acid for supercapacitor application

    P. Khanra, T. Kuila, S. H. Bae, N. H. Kim and J. H. Lee, J. Mater. Chem., 2012, 22, 24403
    DOI: 10.1039/C2JM34838A

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