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A highly active and stable IrO x /SrIrO 3 catalyst for the oxygen evolution reaction

Seitz, Linsey C., Dickens, Colin F., Nishio, Kazunori, Hikita, Yasuyuki, Montoya, Joseph, Doyle, Andrew, Kirk, Charlotte, Vojvodic, Aleksandra, Hwang, Harold Y., Norskov, Jens K., Jaramillo, Thomas F.·2016·Science
DOI 10.1126/science.aaf5050
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Abstract

Oxygen electrochemistry plays a key role in renewable energy technologies such as fuel cells and electrolyzers, but the slow kinetics of the oxygen evolution reaction (OER) limit the performance and commercialization of such devices. Here we report an iridium oxide/strontium iridium oxide (IrO x /SrIrO 3 ) catalyst formed during electrochemical testing by strontium leaching from surface layers of thin films of SrIrO 3 . This catalyst has demonstrated specific activity at 10 milliamps per square centimeter of oxide catalyst (OER current normalized to catalyst surface area), with only 270 to 290 millivolts of overpotential for 30 hours of continuous testing in acidic electrolyte. Density functional theory calculations suggest the formation of highly active surface layers during strontium leaching with IrO 3 or anatase IrO 2 motifs. The IrO x /SrIrO 3 catalyst outperforms known IrO x and ruthenium oxide (RuO x ) systems, the only other OER catalysts that have reasonable activity in acidic electrolyte.

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Metadata

Authors
Seitz, L. C., Dickens, C. F., Nishio, K., Hikita, Y., Montoya, J., Doyle, A., Kirk, C., Vojvodic, A., Hwang, H. Y., Norskov, J. K., & Jaramillo, T. F.
Venue
Science
Publisher
American Association for the Advancement of Science (AAAS)
Published
2016-09-02
Volume
353
Issue
6303
Pages
1011-1014
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
DOI
10.1126/science.aaf5050
OpenAlex
W2514157351
Cited by
2,196
References
6
FWCI
44.07
Type
journal article
Language
en
Open access
closed
Licence
www.sciencemag.org/about/science-licenses-journal-article-reuse (vor, 365 d)
Funders
  • U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (DE-SC0008685)
  • DOE, Office of Science (DE-SC0001060)

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CoChat. (2026). Citation check: A highly active and stable IrO x /SrIrO 3 catalyst for the oxygen evolution reaction. https://app.cochat.ai/papers/10.1126/science.aaf5050
The paper
Seitz, L. C., Dickens, C. F., Nishio, K., Hikita, Y., Montoya, J., Doyle, A., Kirk, C., Vojvodic, A., Hwang, H. Y., Norskov, J. K., & Jaramillo, T. F. (2016). A highly active and stable IrO x /SrIrO 3 catalyst for the oxygen evolution reaction. Science. https://doi.org/10.1126/science.aaf5050

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.