Electrochemical studies of poly (3,4-ethylenedioxythiophene) PEDOT/VS2 nanocomposite as a cathode material for rechargeable lithium batteries

TitleElectrochemical studies of poly (3,4-ethylenedioxythiophene) PEDOT/VS2 nanocomposite as a cathode material for rechargeable lithium batteries
Publication TypeJournal Article
Year of Publication2005
AuthorsA. Murugan, V, Gopinath, CS, Vijayamohanan, K
JournalElectrochemistry Communications
Volume7
Issue2
Pagination213-218
Date PublishedFEB
Type of ArticleArticle
ISSN1388-2481
Keywordslayered nanocomposite, lithium batteries, polythiophene, vanadium disulfide
Abstract

Here, we demonstrate the electrochemical characterization of a new type of layered poly (3,4-ethylenedioxythiophene) PEDOT/ VS2 nanocomposite. It has been prepared via flocculation of delaminated VS2 with subsequent in situ oxidative polymerization of 3,4-ethylenedioxythiophene (EDOT) with VS2 as a host material in the presence of an external oxidizing agent. The interlayer spacing Of VS2 expands from 5.71 to 14.01 A and this interlayer separation is consistent with the existence of a monolayer of PEDOT in the VS2 framework. X-ray diffraction, XPS and TEM studies have been;shown the 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 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 (similar to130 mAh/g) compared to that (80 mAh/g) for pristine VS2. (C) 2004 Published by Elsevier B.V.

DOI10.1016/j.elecom.2004.12.013
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

4.569

Divison category: 
Catalysis and Inorganic Chemistry
Physical and Materials Chemistry