You are not logged in.

The reduction of oxygen on iron(II) oxide/poly(3,4-ethylenedioxythiophene) composite thin film electrodes

Kerr, Robert, Pozo-Gonzalo, Cristina, Forsyth, Maria and Winther-Jensen, Bjorn 2015, The reduction of oxygen on iron(II) oxide/poly(3,4-ethylenedioxythiophene) composite thin film electrodes, Electrochimica acta, vol. 154, pp. 142-148, doi: 10.1016/j.electacta.2014.12.048.

Attached Files
Name Description MIMEType Size Downloads

Title The reduction of oxygen on iron(II) oxide/poly(3,4-ethylenedioxythiophene) composite thin film electrodes
Author(s) Kerr, RobertORCID iD for Kerr, Robert orcid.org/0000-0001-7499-3920
Pozo-Gonzalo, CristinaORCID iD for Pozo-Gonzalo, Cristina orcid.org/0000-0002-7890-6457
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Winther-Jensen, Bjorn
Journal name Electrochimica acta
Volume number 154
Start page 142
End page 148
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-02-01
ISSN 0013-4686
Keyword(s) Science & Technology
Physical Sciences
Electrochemistry
HYDROGEN-PEROXIDE
CONDUCTING POLYMERS
REDOX REACTIONS
POLY(3,4-ETHYLENEDIOXYTHIOPHENE)
PEDOT
POLYMERIZATION
MORPHOLOGY
CELLS
RAMAN
3,4-ETHYLENEDIOXYTHIOPHENE
Summary © 2014 Elsevier Ltd. All rights reserved. Conducting polymers (CPs) are currently being investigated for use in many applications owing to their abilities to catalyze a wide range of electrochemical reactions and act as an effective electrode support for various inorganic and organic electrocatalyst materials. Here, we have found that the deposition of poly(3,4-ethylenedioxythiophene) (PEDOT) through the use of an established base-inhibited chemical vapor-phase polymerization (VPP) procedure using an iron(III) tosylate oxidant results in the co-deposition of electrocatalytic iron(II) oxide species within the film. The presence of these species accounts for the 2-electron reduction of hydrogen peroxide that occurs on these electrodes during the series 4-electron oxygen reduction reaction. Furthermore, this realization leads to the possibility of fabricating thin film inorganic/CP composites of various compositions through careful choice of oxidant in a facile, one-step process. A combination of in situ Raman (487.77 nm laser) and in situ UV-Vis spectroscopy was used to probe the oxidation state of PEDOT in the thin film composite electrodes while reducing oxygen in alkaline conditions. These measurements show that the 2-electron electroreduction of hydrogen peroxide (or HO2 -) occurs only on the iron(II) oxide species in a reaction that is facilitated by an effective electron transfer from the delocalized electron orbitals of the PEDOT matrix. This approach could potentially be used in situ to monitor the electrocatalyst/electrode interface quality of conducting polymer-supported electrocatalysts.
Language eng
DOI 10.1016/j.electacta.2014.12.048
Field of Research 030102 Electroanalytical Chemistry
03 Chemical Sciences
09 Engineering
02 Physical Sciences
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30075401

Document type: Journal Article
Collection: Institute for Frontier Materials
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 10 times in TR Web of Science
Scopus Citation Count Cited 10 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 166 Abstract Views, 1 File Downloads  -  Detailed Statistics
Created: Mon, 30 Nov 2015, 14:41:28 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.