Abstract
In this work, silver (Ag) nanoparticles were deposited on multi-walled carbon nanotubes (MWNTs) by chemical reduction while Ag-decorated MWNTs (Ag-MWNTs)/polyaniline (PANI) composites were prepared by oxidation polymerization. The effect of the Ag incorporated into the interface of the composites on the electrochemical performance of the MWNTs/PANI was investigated. It was found that highly dispersed Ag nanoparticles were deposited onto the MWNTs, and the Ag-MWNTs were successfully coated by PANI. According to cyclic voltammograms, the Ag-MWNTs/PANI exhibited significantly increased electrochemical performances compared to MWNTs/PANI and the highest specific capacitance obtained of MWNTs/PANI and 0.15 M Ag-MWNTs/PANI was 162 F/g and 205 F/g, respectively. This indicated that Ag nanoparticles that were deposited onto the MWNTs caused an enhanced electrochemical performance of the MWNTs/PANI due to their high electric conductivity, which resulted in an increase of the charge transfer between the MWNTs and PANI by a bridge effect.
| Original language | English |
|---|---|
| Pages (from-to) | 2724-2730 |
| Number of pages | 7 |
| Journal | Journal of Solid State Chemistry |
| Volume | 184 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2011 |
Bibliographical note
Funding Information:This work was supported by INHA University Research Grant and Carbon Valley Development Project of the Ministry of Knowledge Economy, Korea.
Keywords
- Electrochemical properties
- Multi-walled carbon nanotubes
- Polyaniline
- Silver nanoparticles