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Baltog, I., Baibarac, M., Lefrant, S. & Gomez-Romero, P. (2009) Surface Enhanced Raman Scattering Studies on Poly(3,4-ethylene dioxythiophene)/Single-Walled Carbon Nanotubes Composites and Their Application to Rechargeable Lithium Batteries. J. Nanosci. Nanotechnol. 9 6204–6209.
Added by: Laurent Cournède (2016-03-10 21:41:23) |
| Type de référence: Article DOI: 10.1166/jnn.2009.1548 Numéro d'identification (ISBN etc.): 1533-4880 Clé BibTeX: Baltog2009 Voir tous les détails bibliographiques  |
Catégories: PMN Mots-clés: batteries, carbon nanotubes, Cathode, conducting polymers, functionalization, pedot, sers Créateurs: Baibarac, Baltog, Gomez-Romero, Lefrant Collection: J. Nanosci. Nanotechnol. |
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| Résumé |
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In this paper, surface enhanced Raman scattering (SERS) studies on the chemical polymerization of 3,4-ethylene dioxythiophene (EDOT) in the presence of single-walled carbon nanotubes (SWNTs) are reported. Both a non-covalent and covalent functionalization of SWNTs with poly(3,4-ethylene dioxythiophene) (PEDOT) is invoked as a result of the following variations induced in the SERS spectra of PEDOT and SWNTs: (i) the appearance of a Raman line at 140 cm(-1) indicating the formation of a new covalent bond between PEDOT and SWNTs; (ii) an increase in the intensity of the Raman line at 705 cm(-1), associated with the deformation vibration mode of C-S-C bond, the result of a steric hindrance effect induced by the bonding of PEDOT on SWNTs; and (iii) the enhancement of the Raman band with maximum at 1540 cm(-1) (G(-) component) in SWNTs when the PEDOT weight in the PEDOT/SWNTs composite increases. Using the PEDOT/SWNTs composite as a positive electrode and an electrolytic solution containing LiPF(6), the charge-discharge characteristics of the rechargeable lithium cells are determined. High specific discharge capacity are reported for the PEDOT/SWNTs composite (ca. 218 mAh g(-1)) in comparison with PEDOT doped with FeCl(4)(-) ions (ca. 25 mAh g(-1)).
Added by: Laurent Cournède |