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Polydiphenylamine/carbon nanotube composites for applications in rechargeable lithium batteries

AuthorsBaibarac, M.; Gómez-Romero, P.
KeywordsCarbon nanotubes
Lithium batteries
Issue DateFeb-2011
CitationMaterials Science and Engineering: B 176(2): 110-120 (2011)
AbstractPolydiphenylamine/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 (LiPF6 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.
Description11 páginas, 10 figuras, 1 tabla, 4 esquemas.-- et al.
Publisher version (URL)http://dx.doi.org/10.1016/j.mseb.2010.10.008
Appears in Collections:(CIN2) Artículos
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