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Efficient oxygen evolution electrocatalysis in acid by a perovskite with face-sharing IrO6 octahedral dimers

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Yang, Lan, Yu, Guangtao, Ai, Xuan, Yan, Wensheng, Duan, Hengli, Chen, Wei, Li, Xiaotian, Wang, Ting, Zhang, Chenghui, Huang, Xuri, Chen, Jie-Sheng, Zou, Xiaoxin·2018·Nature Communications
DOI 10.1038/s41467-018-07678-w
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Abstract

The widespread use of proton exchange membrane water electrolysis requires the development of more efficient electrocatalysts containing reduced amounts of expensive iridium for the oxygen evolution reaction (OER). Here we present the identification of 6H-phase SrIrO 3 perovskite (6H-SrIrO 3) as a highly active electrocatalyst with good structural and catalytic stability for OER in acid. 6H-SrIrO 3 contains 27.1 wt% less iridium than IrO 2, but its iridium mass activity is about 7 times higher than IrO 2, a benchmark electrocatalyst for the acidic OER. 6H-SrIrO 3 is the most active catalytic material for OER among the iridium-based oxides reported recently, based on its highest iridium mass activity. Theoretical calculations indicate that the existence of face-sharing octahedral dimers is mainly responsible for the superior activity of 6H-SrIrO 3 thanks to the weakened surface Ir-O binding that facilitates the potential-determining step involved in the OER (i.e., O* + H 2 O → HOO* + H+ + e¯).

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Research works printed but not linked: 35

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Metadata

Authors
Yang, L., Yu, G., Ai, X., Yan, W., Duan, H., Chen, W., Li, X., Wang, T., Zhang, C., Huang, X., Chen, J.-S., & Zou, X.
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2018-12-07
Volume
9
Issue
1
Pages
5236-5236
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/s41467-018-07678-w
OpenAlex
W2903072898
Cited by
487
References
9
FWCI
9.11
Type
journal article
Language
en
Open access
gold
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CoChat. (2026). Citation check: Efficient oxygen evolution electrocatalysis in acid by a perovskite with face-sharing IrO6 octahedral dimers. https://app.cochat.ai/papers/10.1038/s41467-018-07678-w
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Yang, L., Yu, G., Ai, X., Yan, W., Duan, H., Chen, W., Li, X., Wang, T., Zhang, C., Huang, X., Chen, J.-S., & Zou, X. (2018). Efficient oxygen evolution electrocatalysis in acid by a perovskite with face-sharing IrO6 octahedral dimers. Nature Communications. https://doi.org/10.1038/s41467-018-07678-w

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