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Synthesis and characterization of organic–inorganic poly(3,4-ethylenedioxythiophene)/MoS2 nanocomposite via in situ oxidative polymerization

Published online by Cambridge University Press:  01 January 2006

A. Vadivel Murugan*
Affiliation:
Centre for Materials for Electronics Technology (C-MET), Department of Information Technology, Government of India, Panchawati, Pune – 411008, India
Mathieu Quintin
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Centre National de la Recherche Scientifique (CNRS), 33608 Pessac, France
Marie-Helene Delville
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Centre National de la Recherche Scientifique (CNRS), 33608 Pessac, France
Guy Campet
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Centre National de la Recherche Scientifique (CNRS), 33608 Pessac, France
Annamraju Kasi Viswanath
Affiliation:
Centre for Materials for Electronics Technology (C-MET), Department of Information Technology, Government of India, Panchawati, Pune – 411008, India
Chinnakonda S. Gopinath
Affiliation:
Catalysis Division, National Chemical Laboratory, Pune – 411008, India
K. Vijayamohanan*
Affiliation:
Physical and Materials Chemistry Division, National Chemical Laboratory, Pune – 411008, India
*
a)Address all correspondence to these authors. e-mail: vadivel12@hotmail.com
b)Address all correspondence to these authors. e-mail: viji@ems.res.ncl.in
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Abstract

Here we demonstrate the synthesis of a new type of layered poly(3,4-ethylenedioxy- thiophene) (PEDOT)/MoS2 nanocomposite via flocculation of delaminated MoS2 with subsequent in situ oxidative polymerization of 3,4-ethylenedioxythiophene. The resulting nanocomposite was characterized by Fourier transform infrared spectroscopy, powder x-ray diffraction, x-ray photoelectron spectroscopy, thermal analysis, transmission electron microscopy, and four-probe electrical conductivity measurements with respect to temperature. X-ray diffraction results indicated that the exfoliated MoS2 and PEDOT are restacked to produce a novel nanoscale composite material containing alternate nanoribbons of PEDOT in between MoS2 with a basal distance of ∼1.38 nm. The nanocomposite, which could be used as a cathode material for small power rechargeable lithium batteries, has also been demonstrated by the electrochemical insertion of lithium into the PEDOT/MoS2 nanocomposite, where a significant enhancement in the discharge capacity is observed, compared to that of respective pristine molybdenum disulfide.

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Copyright © Materials Research Society 2006

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References

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Synthesis and characterization of organic–inorganic poly(3,4-ethylenedioxythiophene)/MoS2 nanocomposite via in situ oxidative polymerization
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Synthesis and characterization of organic–inorganic poly(3,4-ethylenedioxythiophene)/MoS2 nanocomposite via in situ oxidative polymerization
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