ANYL 121 |
| In this paper, we studied the conducting polymer electrochemistry by using different nanostructures of PEDOT [Poly(3,4-ethylenedioxythiophene)]. PEDOT nanotubes and nanowires were fabricated by electropolymerization of different concentrations of EDOT monomers at different potentials on shape-differentiated nanoelectrodes in the porous alumina template. The mass of PEDOT was controlled by fixing the charge passed for the electropolymerization. TEM and SEM were used to characterize the PEDOT structure and morphology. Cyclic voltammetry, galvanostatic charge-discharge and impedance spectroscopy were utilized to study the electrochemical properties that were found to be greatly affected by the nanostructures of the PEDOT. The nanotubes of PEDOT utilized their large internal specific area and the thin wall of tubular structure to achieve a fast and efficient electrochemistry which is required by the applications such electrochormic devices and supercapacitors. On the other hand, the rigid nanowires featured a very sluggish electrochemistry due to the large semi-infinite diffusion impedance. |
|
General Papers
7:00 PM-9:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Division of Analytical Chemistry |