Kinetic isotope effect in the oxygen reduction reaction (ORR) over Fe-N/C catalysts under acidic and alkaline conditions.
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Accepted version
Published version
Author(s)
Malko, D
Kucernak, ARJ
Type
Journal Article
Abstract
Heat treated Fe-N/C materials which are highly effective oxygen reduction catalysts in alkaline and acid, show a significant kinetic isotope effect (KIE). The values in acid (~3.4) and alkaline (~2.5) are much larger than the value for the metal free catalyst in acid (~1.8) suggesting that the rate determining step (RDS) is a proton coupled electron transfer in acid with a significant pathway involving a proton independent step under an alkaline environment
Date Issued
2017-09-05
Date Acceptance
2017-09-04
Citation
Electrochemistry Communications, 2017, 83, pp.67-71
ISSN
1388-2481
Publisher
Elsevier
Start Page
67
End Page
71
Journal / Book Title
Electrochemistry Communications
Volume
83
Copyright Statement
© 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/J016454/1
Subjects
03 Chemical Sciences
09 Engineering
Energy
Publication Status
Published