English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  The Common Intermediates of Oxygen Evolution and Dissolution Reactions during Water Electrolysis on Iridium

Kasian, O., Grote, J.-P., Geiger, S., Cherevko, S., & Mayrhofer, K. J. J. (2018). The Common Intermediates of Oxygen Evolution and Dissolution Reactions during Water Electrolysis on Iridium. Angewandte Chemie International Edition, 57(9), 2488-2491. doi:10.1002/anie.201709652.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0001-E7E2-B Version Permalink: http://hdl.handle.net/21.11116/0000-0001-E7E4-9
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Kasian, Olga1, Author              
Grote, Jan-Philipp1, Author              
Geiger, Simon1, Author              
Cherevko, Serhiy1, 2, Author              
Mayrhofer, Karl Johann Jakob1, 2, 3, Author              
Affiliations:
1Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
2Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              
3Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, ou_persistent22              

Content

show
hide
Free keywords: Degradation; Dissolution; Electrolysis; Hydrogen; Inductively coupled plasma; Mass spectrometry; Oxygen; Photodegradation; Reaction intermediates, Catalyst degradation; Degradation products; Dissolution mechanism; Dissolution reactions; Electrochemical mass spectrometry; Oxygen evolution reaction; Reaction mechanism; Water electrolysis, Iridium
 Abstract: Understanding the pathways of catalyst degradation during the oxygen evolution reaction is a cornerstone in the development of efficient and stable electrolyzers, since even for the most promising Ir based anodes the harsh reaction conditions are detrimental. The dissolution mechanism is complex and the correlation to the oxygen evolution reaction itself is still poorly understood. Here, by coupling a scanning flow cell with inductively coupled plasma and online electrochemical mass spectrometers, we monitor the oxygen evolution and degradation products of Ir and Ir oxides in situ. It is shown that at high anodic potentials several dissolution routes become possible, including formation of gaseous IrO3. On the basis of experimental data, possible pathways are proposed for the oxygen-evolution-triggered dissolution of Ir and the role of common intermediates for these reactions is discussed. © 2018 The Authors. Published by Wiley-VCH Verlag GmbH Co. KGaA.

Details

show
hide
Language(s): eng - English
 Dates: 2018-12-08
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1002/anie.201709652
BibTex Citekey: Kasian20182488
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Angewandte Chemie International Edition
  Other : Angew. Chem. Int. Ed.
  Other : Angewandte Chemie, International Edition
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 57 (9) Sequence Number: - Start / End Page: 2488 - 2491 Identifier: ISSN: 1433-7851
CoNE: /journals/resource/1433-7851