Kinetic isotope effect in the oxygen reduction reaction (ORR) over Fe-N/C catalysts under acidic and alkaline conditions.

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Title: Kinetic isotope effect in the oxygen reduction reaction (ORR) over Fe-N/C catalysts under acidic and alkaline conditions.
Authors: Malko, D
Kucernak, ARJ
Item 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
Issue Date: 5-Sep-2017
Date of Acceptance: 4-Sep-2017
URI: http://hdl.handle.net/10044/1/50616
DOI: https://dx.doi.org/10.1016/j.elecom.2017.09.004
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/).
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/J016454/1
Keywords: 03 Chemical Sciences
09 Engineering
Energy
Publication Status: Published
Appears in Collections:Chemistry
Faculty of Natural Sciences



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