High-Performance Pyrochlore-Type Yttrium Ruthenate Electrocatalyst for Oxygen Evolution Reaction in Acidic Media
Open accessAbstract
Development of acid-stable electrocatalysts with low overpotential for oxygen evolution reaction (OER) is a major challenge to produce hydrogen directly from water. We report in this paper a pyrochlore yttrium ruthenate (Y 2 Ru 2 O 7-δ ) electrocatalyst that has significantly enhanced performance toward OER in acid media over the best-known catalysts, with an onset overpotential of 190 mV and high stability in 0.1 M perchloric acid solution. X-ray absorption near-edge structure (XANES) indicates Y 2 Ru 2 O 7-δ electrocatalyst had a low valence state that favors the high OER activity. Density functional theory (DFT) calculation shows this pyrochlore has lower band center energy for the overlap between Ru 4d and O 2p orbitals and is therefore more stable Ru-O bond than RuO 2 , highlighting the effect of yttrium on the enhancement in stability. The Y 2 Ru 2 O 7-δ pyrochlore is also free of expensive iridium metal and thus is a cost-effective candidate for practical applications.
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The remarkable OER activity of Ru-30 may result from the interfacial effect from RuO2 formed on the surface of Ru nanoparticles, which can modulate OER intermediates adsorption.
“The remarkable OER activity of Ru-30 may be resulting from the interfacial effect from the RuO2 formed on the surface of the Ru nanoparticles, which can modulate the OER intermediates adsorption [48].”
From Partially oxidized ruthenium aerogel as highly active bifunctional electrocatalyst for overall water splitting in both alkaline and acidic media (2022) · cites this paper as [48]
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- Authors
- Kim, J., Shih, P.-C., Tsao, K.-C., Pan, Y.-T., Yin, X., Sun, C.-J., & Yang, H.
- Affiliations
- University of Illinois Urbana-Champaign (US)
- Argonne National Laboratory (US)
- Corresponding author
- Yang, Hong
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-07-27
- Volume
- 139
- Issue
- 34
- Pages
- 12076-12083
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2740568941
- Cited by
- 501
- References
- 2
- Citations by year
- 2026: 39 · 2025: 66 · 2024: 77 · 2023: 74 · 2022: 58 · 2021: 67 · 2020: 43 · 2019: 46 · 2018: 28 · 2017: 3
- FWCI
- 8.79
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Journal of the American Chemical Society (publishedVersion, other-oa)
- PubMed (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- Funders
- U.S. Department of Energy (DE-AC02-06CH11357)
- University of Illinois at Urbana-Champaign (NA)
- Canadian Light Source (NA)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Keywords
- oxygen evolution reaction, pyrochlore, electrocatalysts, acidic media, iridium-free catalysts, hydrogen production, catalyst stability, perchloric acid
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