Journal
ELECTROCHIMICA ACTA
Volume 54, Issue 24, Pages 5621-5628Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.04.066
Keywords
Multi-wall carbon nanotubes; Fullerene polymers; Conducting composites; Electropolymerization; Capacitance
Categories
Funding
- Polish Ministry of Science and Higher Education [N 204 374 733]
- European Regional Development Fund (ERDF) [POIG.01.01.02-00-008/08]
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Preparation and electrochemical properties of a novel type of the composite made of multi-wall carbon nanotubes (MWCNTs) and two-component polymer of palladium and C-60 (C-60-Pd) were investigated using cyclic voltammetry, electrochemical impedance spectroscopy, and piezoelectric microgravimetry. A composite film was prepared by electrochemical deposition of C-60-Pd on the layer of MWCNTs immobilized on the electrode surface. The polymer forms islands of shells on the carbon multi-wall core. This composite is electrochemically active in the negative potential range due to the electroreduction of the fullerene moiety. In this potential range, specific pseudo-capacitance of the film of the MWCNT/C-60-Pd composite is 425 F g(-1) in the acetonitrile solution of tetra(n-butyl)ammonium perchlorate. The presence of MWCNTs makes the composite conductive also at potentials less negative than potentials of the C-60 electroreduction. The double-layer specific capacitance of this film is close to 15 F g(-1). (C) 2009 Elsevier Ltd. All rights reserved.
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