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Electrochemical behavior and capacitance properties of carbon xerogel/multiwalled carbon nanotubes composites
- Source :
- Journal of Solid State Electrochemistry. 16:1067-1076
- Publication Year :
- 2011
- Publisher :
- Springer Science and Business Media LLC, 2011.
-
Abstract
- The electrochemical behavior of carbon xerogel/multiwalled carbon nanotubes composite in a 6 M KOH solution has been investigated. Three different mixtures of teflonized carbons with varying nanotube content were prepared. The electrodes containing multiwalled carbon nanotubes were found to provide enhanced capacities compared with those prepared with only carbon xerogel. Cyclic voltammetry and charge–discharge experiments reveal the presence of a strong resistive component, which decreases as the amount of nanotubes increases. Electrochemical impedance spectroscopy results analyzed in terms of an adequate physicochemical model of the porous electrode, show that an increasing amount of nanotubes enhances both the effective solid-phase conductivity and the effective liquid-phase conductivity, linked to the porosity of the electrodes.
- Subjects :
- Nanotube
Materials science
Carbon nanofiber
chemistry.chemical_element
Carbon nanotube
Condensed Matter Physics
law.invention
Dielectric spectroscopy
Potential applications of carbon nanotubes
chemistry
law
Frit compression
Electrochemistry
General Materials Science
Electrical and Electronic Engineering
Cyclic voltammetry
Composite material
Carbon
Subjects
Details
- ISSN :
- 14330768 and 14328488
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Journal of Solid State Electrochemistry
- Accession number :
- edsair.doi...........93a71aab67c8d42b657c149a86c9cae4