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Oxygen reduction on transition metal catalysts in aqueous electrolyte: Elementary kinetic modeling

Horstmann, Birger and Eberle, Daniel (2014) Oxygen reduction on transition metal catalysts in aqueous electrolyte: Elementary kinetic modeling. Electrochimica Acta, 137, pp. 714-720. Elsevier. DOI: doi:10.1016/j.electacta.2014.05.144 ISSN 0013-4686

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Official URL: http://www.sciencedirect.com/science/article/pii/S0013468614011591

Abstract

Oxygen reduction is central to electrochemical energy storage in a carbon-neutral energy system, e.g., in fuel cells or metal-air batteries. In this paper we discuss the kinetics of the oxygen reduction reaction in acidic media via mean-field modeling of surface adsorbents. We put a special focus on the importance of interactions between adsorbents. Our study is based on detailed ab-initio simulations of thermodynamic and kinetic parameters on the Pt(111) surface. The oxygen dissociation and the hydroperoxyl dissociation pathway are found to determine the overall reaction kinetics and to result in the double Tafel slope on Pt(111).

Item URL in elib:https://elib.dlr.de/92251/
Document Type:Article
Title:Oxygen reduction on transition metal catalysts in aqueous electrolyte: Elementary kinetic modeling
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Horstmann, Birgerbirger.horstmann (at) dlr.deUNSPECIFIED
Eberle, DanielDLRUNSPECIFIED
Date:10 August 2014
Journal or Publication Title:Electrochimica Acta
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:137
DOI :doi:10.1016/j.electacta.2014.05.144
Page Range:pp. 714-720
Publisher:Elsevier
ISSN:0013-4686
Status:Published
Keywords:Oxygen reduction reaction; Pt(111) surface; Elementary kinetics model; Tafel slope
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Computational Electrochemistry
Deposited By: Horstmann, Birger
Deposited On:25 Nov 2014 09:12
Last Modified:06 Sep 2019 15:16

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