Electrocatalytic Reduction of Oxygen at Poly(o-phenylenediamine) and Poly(3,4- ethylenedioxythiophene) at a Carbon Nanotube Modified Glassy Carbon Electrodes
No Thumbnail Available
Date
2010-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa Universty
Abstract
Electrochemical behaviour and electrocatalytic reduction of oxygen has been studied at
PoPDA, and PEDOT mutiwall carbon nano-tube (MWCNT) composite film modified glassy
carbon electrode. Cyclic and rotating disk voltammetric techniques were used to investigate
the electrocatalytic activity of MWCNT composite film electrodes for oxygen reduction
reaction (ORR). Glassy carbon electrodes modified with multiwall carbon nanotube by
casting functionalized carbon nanotube was electropolymerized by using oPDA and EDOT.
Koutecky-levich analysis at rotating disk electrode made possible to evaluate the kinetic
parameters; total number of exchanged electron, limiting current, Tafel slope and exchange
current density. Composites of PoPDA multi-wall carbon nanotube shows enhanced
electrocatalytic activity for oxygen reduction reaction but the composite of PEDOT does not
show electrocatalytic activity for oxygen reduction reaction.
Keywods: ORR, MWCNT, Electrocatalysis, Electropolymerization, Overpotential, Tafel
slope, exchange current density.
Description
Keywords
ORR, MWCNT; Electrocatalysis; Electropolymerization; Overpotential; Tafel Slope; exchange current density.