High-speed carbon nanotube actuators based on an oxidation/reduction reaction.
Chemistry
; 17(39): 10965-71, 2011 Sep 19.
Article
em En
| MEDLINE
| ID: mdl-21826748
ABSTRACT
Actuators with a high-speed response under a high-frequency (more than 100 Hz) applied square-wave voltage of ±2 V have been developed with an electrode composed of millimeter-long single-walled carbon nanotubes synthesized by the "supergrowth method" (SG-SWNTs) and ionic liquids (ILs). Detailed studies concerning induced electric current and transferred charge in the electrode as well as cyclic voltammetric studies of the electrode revealed that the high-speed response originates from the electric current generated by an oxidation/reduction (redox) reaction in addition to electric double-layer charging. The contribution of the redox reactions of SG-SWNTs to the actuation is sensitive to the presence of supporting polymers, the thickness of the electrolyte, and the amplitude of the applied voltage.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Nanotubos de Carbono
/
Líquidos Iônicos
/
Técnicas Eletroquímicas
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article