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A Dissolution/Precipitation Equilibrium on the Surface of Iridium‐Based Perovskites Controls Their Activity as Oxygen Evolution Reaction Catalysts in Acidic Media
Open accessAbstract
Recently, Ir V‐based perovskite‐like materials were proposed as oxygen evolution reaction (OER) catalysts in acidic media with promising performance. However, iridium dissolution and surface reconstruction were observed, questioning the real active sites on the surface of these catalysts. In this work, Sr 2 MIr(V)O 6(M=Fe, Co) and Sr 2 Fe 0.5 Ir 0.5(V)O 4 were explored as OER catalysts in acidic media. Their activities were observed to be roughly equal to those previously reported for La 2 LiIrO 6 or Ba 2 PrIrO 6. Coupling electrochemical measurements with iridium dissolution studies under chemical or electrochemical conditions, we show that the deposition of an IrOxlayer on the surface of these perovskites is responsible for their OER activity. Furthermore, we experimentally reconstruct the iridium Pourbaix diagram, which will help guide future research in controlling the dissolution/precipitation equilibrium of iridium species for the design of better Ir‐based OER catalysts.
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Cites
Toward the rational design of non-precious transition metal oxides for oxygen electrocatalysis
Hong, W. T., Risch, M., Stoerzinger, K. A., Grimaud, A., Suntivich, J., & Shao-Horn, Y. (2015) · Energy & Environmental Science · doi:10.1039/c4ee03869j · Cited by 2,089
Self-citationThe Mechanism of Water Oxidation: From Electrolysis via Homogeneous to Biological Catalysis
Dau, H., Limberg, C., Reier, T., Risch, M., Roggan, S., & Strasser, P. (2010) · ChemCatChem · doi:10.1002/cctc.201000126 · Cited by 1,783
Developments and perspectives of oxide-based catalysts for the oxygen evolution reaction
Fabbri, E., Habereder, A., Waltar, K., Kötz, R., & Schmidt, T. J. (2014) · Catal. Sci. Technol. · doi:10.1039/c4cy00669k · Cited by 1,303
Improved Electrodeposited Iridium Oxide pH Sensor Fabricated on Etched Titanium Substrates
Marzouk, S. A. M. (2003) · Analytical Chemistry · doi:10.1021/ac0261404 · Cited by 136
Cited by
A review on fundamentals for designing oxygen evolution electrocatalysts
Song, J., Wei, C., Huang, Z.-F., Liu, C., Zeng, L., Wang, X., & Xu, Z. J. (2020) · Chemical Society Reviews · doi:10.1039/c9cs00607a · Cited by 2,936
Chen, F.-Y., Wu, Z.-Y., Adler, Z., & Wang, H. (2021) · Joule · doi:10.1016/j.joule.2021.05.005 · Cited by 1,284
Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting
Quan, L., Jiang, H., Mei, G., Sun, Y., & You, B. (2024) · Chemical Reviews · doi:10.1021/acs.chemrev.3c00332 · Cited by 874
Sun, H., Xu, X., Kim, H., Jung, W., Zhou, W., & Shao, Z. (2023) · ENERGY & ENVIRONMENTAL MATERIALS · doi:10.1002/eem2.12441 · Cited by 601
Stability of electrocatalytic OER: from principle to application
Li, H., Lin, Y., Duan, J., Wen, Q., Liu, Y., & Zhai, T. (2024) · Chemical Society Reviews · doi:10.1039/d3cs00010a · Cited by 540
Metadata
- Authors
- Zhang, R., Dubouis, N., Ben Osman, M., Yin, W., Sougrati, M. T., Corte, D. A. D., Giaume, D., & Grimaud, A.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2019-02-27
- Volume
- 58
- Issue
- 14
- Pages
- 4571-4575
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2912044925
- Cited by
- 206
- References
- 4
- FWCI
- 5.82
- Type
- journal article
- Language
- en
- Open access
- green
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- Zhang, R., Dubouis, N., Ben Osman, M., Yin, W., Sougrati, M. T., Corte, D. A. D., Giaume, D., & Grimaud, A. (2019). A Dissolution/Precipitation Equilibrium on the Surface of Iridium‐Based Perovskites Controls Their Activity as Oxygen Evolution Reaction Catalysts in Acidic Media. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201814075
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