VADIVEL MURUGAN, A.; QUINTIN, Mathieu; DELVILLE, Marie-Hélène; CAMPET, Guy; VIJAYAMOHANAN, K.

doi:10.1039/b414922j

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

VADIVEL MURUGAN, A.
Centre for Materials for Electronics Technology [C-MET]

QUINTIN, Mathieu
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

DELVILLE, Marie-Hélène
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

Langue

Article de revue

Ce document a été publié dans

Journal of Materials Chemistry. 2005, vol. vol. 15, n° 8, p. p. 902-909

Royal Society of Chemistry

Résumé en anglais

Here we report the synthesis and characterization of a new class of nanocomposite by direct in situ oxidative polymerization of 3,4-ethylenedioxythiophene (EDOT) with VS2 as a host material in the presence of an external oxidizing agent. Upon intercalation, the interlayer spacing of VS2 expands from 5.71 Å to 14.01 Å, followed by exfoliation and a restacking process facilitating expansion of the lattice in a direction perpendicular to the dichalcogenide layers. This change in interlayer separation is consistent with the existence of two phases of organic and inorganic species in the nanocomposites corresponding to the intercalation of PEDOT in the VS2 framework. The resulting nanocomposite is characterized by thermal analysis (TGA), X-ray diffraction, FTIR, SEM, TEM, and four-probe electrical conductivity measurements. The application potential of the nanocomposite as a cathode material for rechargeable lithium batteries is also demonstrated by the electrochemical intercalation of lithium into the PEDOT–VS2 nanocomposite, where a significant enhancement in the discharge capacity is observed (130 mA h g–1) compared to that (80 mA h g–1) for pristine VS2< Réduire

Mots clés en anglais

Electric conductivity

Electric discharges

Fourier transform infrared spectroscopy

Lithium batteries

Nanostructured materials

Oxidation

Polymerization

Scanning electron microscopy

Synthesis (chemical)

Thermogravimetric analysis

Transmission electron microscopy

X ray diffraction

Métadonnées

Licence d’utilisation du document

Entrapment of poly(3,4-ethylenedioxythiophene) between VS2 layers to form a new organic–inorganic intercalative nanocomposite

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche