High-Capacitance Supercapacitor Using a Nanocomposite Electrode of Single-Walled Carbon Nanotube and Polypyrrole
- 1 January 2002
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 149 (8), A1058-A1062
- https://doi.org/10.1149/1.1491235
Abstract
A nanocomposite electrode of single-walled carbon nanotube (SWNT) and polypyrrole (Ppy) is fabricated to improve the specific capacitance of the supercapacitor. The individual nanotubes and nanoparticles are uniformly coated with Ppy by in situ chemical polymerization of pyrrole. To characterize the SWNT-Ppy nanocomposite electrodes, a charge-discharge cycling test for measuring specific capacitance, cyclic voltammetry, and an ac impedance test are executed. The SWNT-Ppy nanocomposite electrode shows much higher specific capacitance than pure Ppy and as-grown SWNT electrodes, due to the uniformly coated Ppy on the SWNTs. The effects of the conducting agent added in the nanocomposite electrodes on specific capacitance and internal resistance of supercapacitors are also investigated. © 2002 The Electrochemical Society. All rights reserved.Keywords
This publication has 23 references indexed in Scilit:
- Electrochemical Properties of High-Power Supercapacitors Using Single-Walled Carbon Nanotube ElectrodesAdvanced Functional Materials, 2001
- Supercapacitors Using Single-Walled Carbon Nanotube ElectrodesAdvanced Materials, 2001
- Specific surface area of carbon nanotubes and bundles of carbon nanotubesCarbon, 2001
- Electrochemical Characterization of Single-Walled Carbon Nanotube ElectrodesJournal of the Electrochemical Society, 2000
- Study of electrochemical capacitors utilizing carbon nanotube electrodesJournal of Power Sources, 1999
- Supercapacitors based on nanostructured carbon electrodes grown by cluster-beam depositionApplied Physics Letters, 1999
- Electrical and Optical Properties of Conducting Polymer - Fullerene and Conducting Polymer - Carbon Nanotube CompositesFullerene Science and Technology, 1999
- Electrochemical storage of lithium in multiwalled carbon nanotubesCarbon, 1999
- Electrochemical Characterization of Films of Single-Walled Carbon Nanotubes and Their Possible Application in SupercapacitorsElectrochemical and Solid-State Letters, 1999
- High power electrochemical capacitors based on carbon nanotube electrodesApplied Physics Letters, 1997