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Cited by 559

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

Open access
Kasian, Olga, Grote, Jan‐Philipp, Geiger, Simon, Cherevko, Serhiy, Mayrhofer, Karl J. J.·2018·Angewandte Chemie International Edition

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 IrO 3. 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.

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Metadata

Authors
Kasian, O., Grote, J., Geiger, S., Cherevko, S., & Mayrhofer, K. J. J.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2018-02-05
Volume
57
Issue
9
Pages
2488-2491
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2773276663
Cited by
559
References
2
FWCI
8.47
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: The Common Intermediates of Oxygen Evolution and Dissolution Reactions during Water Electrolysis on Iridium. https://app.cochat.ai/papers/10.1002/anie.201709652
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Kasian, O., Grote, J., 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. https://doi.org/10.1002/anie.201709652

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