Flexible Symmetric Supercapacitors Based on TiO[Formula Omitted] and Carbon Nanotubes
Highly conducting carbon nanotube has been widely studied as electrode in double-layer-effect supercapacitors. In this paper, we introduce a hybrid-electrode design to further improve the specific capacitance by incorporating TiO [Formula Omitted] nanotubes with carbon nanotubes. Vertically oriented...
Saved in:
Published in | IEEE transactions on nanotechnology Vol. 10; no. 4; p. 706 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
New York
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
01.07.2011
|
Online Access | Get full text |
Cover
Loading…
Summary: | Highly conducting carbon nanotube has been widely studied as electrode in double-layer-effect supercapacitors. In this paper, we introduce a hybrid-electrode design to further improve the specific capacitance by incorporating TiO [Formula Omitted] nanotubes with carbon nanotubes. Vertically oriented TiO [Formula Omitted] nanotube arrays are fabricated by anodization process and used as porous pseudocapacitive electrode with compact density and large surface area. Conductive multiwall carbon nanotube networks are coated on the TiO[Formula Omitted] nanotubes to form the hybrid electrode. With 1M H[Formula Omitted]SO[Formula Omitted] as electrolyte, the specific capacitance can be enhanced by about 30% as compared to pure carbon-nanotube electrode. Electrochemical impedance spectroscopy shows good capacitive behavior for the device. This hybrid-electrode technique demonstrates also a promising application for flexible energy devices and electronics. |
---|---|
ISSN: | 1536-125X 1941-0085 |
DOI: | 10.1109/TNANO.2010.2069569 |