Baibarac, M., Baltog, I., Lefrant, S. & Gomez-Romero, P. (2011) Polydiphenylamine/carbon nanotube composites for applications in rechargeable lithium batteries. Mater. Sci. Eng. B-Adv. Funct. Solid-State Mater. 176 110–120.
Added by: Laurent Cournède (2016-03-10 21:32:21)
|Type de référence: Article
Numéro d'identification (ISBN etc.): 0921-5107
Clé BibTeX: Baibarac2011c
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Mots-clés: carbon nanotubes, Composites, Cyclic voltammetry, diphenylamine, electrolyte, graphite, Lithium batteries, oxidation, performance, polyaniline, polymerization, polymers, raman, walled carbon nanotubes
Créateurs: Baibarac, Baltog, Gomez-Romero, Lefrant
Collection: Mater. Sci. Eng. B-Adv. Funct. Solid-State Mater.
Consultations : 4/489
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Polydiphenylamine/single walled carbon nanotube (PDPA/SWNT) composites were synthesized electrochemically aiming at their application as active electrode materials for rechargeable lithium batteries. The electrochemical polymerization of diphenylamine (DPA) on a SWNT film immersed in a 1 M HCl solution was studied by cyclic voltammetry. Comparing cyclic voltammograms recorded on a blank Pt electrode with those obtained for a SWNT film deposited on Pt electrode one observes in the latter case a decrease of the DPA reduction potential. To elucidate electrochemical polymerization mechanism, photoluminescence studies on DPA/SWNT and PDPA/SWNT systems were carried out. Additional information concerning the functionalization process of SWNT with PDPA was obtained by Raman and IR spectroscopy. Using the PDPA/SWNT composite as active material for the positive electrode of a rechargeable lithium cell (LiPF(6) electrolyte), the charge-discharge tests show a specific discharge capacity of ca. 245 mA h g(-1), much higher than the 35 mA h g(-1) for pure PDPA. (C) 2010 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède