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Carbon-polyaniline nanocomposites as supercapacitor materials

Publication Type : Journal Article

Thematic Areas : Advanced Materials and Green Technologies

Publisher : Materials Research Express, Institute of Physics Publishing

Source : Materials Research Express, Institute of Physics Publishing, Volume 5, Number 4 (2018)

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Campus : Coimbatore

School : School of Engineering, School of Physical Sciences

Center : Center for Excellence in Advanced Materials and Green Technologies, Center for Industrial Research and Innovation (ACIRI)

Department : Chemical, Civil, Sciences

Year : 2018

Abstract : Polyaniline-based nanocomposites containing carbon nanotubes (CNT), reduced graphene oxide (rGO) and mixture of CNTs and rGO were synthesized. UV-visible spectroscopy and FT-IR spectroscopy confirmed the presence of polyaniline (PANi) and carbon nanomaterials. Scanning electron microscopy revealed that the neat PANi had a granular morphology, which can lead to increased electrical resistance to high interfacial resistance between domains of PANi. Cyclic voltammetry of PANi, PANi/CNT, PANi/rGO and PANi/CNT/rGO showed that in general, specific capacitance reduces with increasing scan rate within the range (10-100mVs-1). Also the specific capacitance values at any given scan rate within the above range, for PANi, PANi/CNT, PANi/rGO and PANi/CNT/rGO were found to be in increasing order. The specific capacitance of the PANi/CNT/rGO nanocomposite as measured by galvanostatic charge-discharge measurements, was found to be 312.5 F g-1. The introduction of the carbon nanomaterials (CNTs, rGO) in PANi in general leads to improved specific capacitance, while the addition of CNTs and rGO together leads to synergistic improvement in the specific capacitance, owing to a combination of factors. ©2018 IOP Publishing Ltd.

Cite this Research Publication : M. S. Kumar, Yasoda, K. Y., Sudip Kumar Batabyal, and Dr. Nikhil K. Kothurkar, “Carbon-polyaniline nanocomposites as supercapacitor materials”, Materials Research Express, vol. 5, 2018.

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