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Issue 31, 2013

Electrochemical and electrical performances of cobalt chloride (CoCl2) doped polyaniline (PANI)/graphene nanoplate (GNP) composite

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Abstract

The present study represents a simple and scalable method that involves in situ polymerization of cobalt chloride (CoCl2·6H2O) doped aniline in the presence of graphene nanoplates (GNPs) in HCl medium, for the preparation of CoCl2 doped polyaniline (PANI)/GNP composites (PGC) as a supercapacitor electrode material with noteworthy performance. The maximum specific capacitance and energy density of the PGC composites were found to be ≈634 F g−1 and ≈427 W h kg−1, respectively, at a 10 mV s−1 scan rate. Through judicious control of the GNP content and CoCl2 doped PANI in the composites, a very high electrical conductivity (≈12.2 S cm−1) was achieved at unprecedented low GNP content. The PGC composites also exhibited high alternating current (AC) electrical conductivity in the frequency region of ∼101 to ∼107 Hz. The morphology of the composites was successfully studied by field emission scanning electron microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM).

Graphical abstract: Electrochemical and electrical performances of cobalt chloride (CoCl2) doped polyaniline (PANI)/graphene nanoplate (GNP) composite

Supplementary files

Article information


Submitted
04 Apr 2013
Accepted
09 May 2013
First published
10 May 2013

RSC Adv., 2013,3, 12874-12885
Article type
Paper

Electrochemical and electrical performances of cobalt chloride (CoCl2) doped polyaniline (PANI)/graphene nanoplate (GNP) composite

S. Maiti and B. B. Khatua, RSC Adv., 2013, 3, 12874 DOI: 10.1039/C3RA41617H

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