The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.
Ir Single Atoms Boost Metal–Oxygen Covalency on Selenide-Derived NiOOH for Direct Intramolecular Oxygen Coupling
Abstract
This investigation probes the intricate interplay of catalyst dynamics and reaction pathways during the oxygen evolution reaction (OER), highlighting the significance of atomic-level and local ligand structure insights in crafting highly active electrocatalysts. Leveraging a tailored ion exchange reaction followed by electrochemical dynamic reconstruction, we engineered a novel catalytic structure featuring single Ir atoms anchored to NiOOH (Ir 1 @NiOOH). This novel approach involved the strategic replacement of Fe with Ir, facilitating the transition of selenide precatalysts into active (oxy)hydroxides. This elemental substitution promoted an upward shift in the O 2p band and intensified the metal–oxygen covalency, thereby altering the OER mechanism toward enhanced activity. The shift from a single-metal site mechanism (SMSM) in NiOOH to a dual-metal-site mechanism (DMSM) in Ir 1 @NiOOH was substantiated by in situ differential electrochemical mass spectrometry (DEMS) and supported by theoretical insights. Remarkably, the Ir 1 @NiOOH electrode exhibited exceptional electrocatalytic performance, achieving overpotentials as low as 142 and 308 mV at current densities of 10 and 1000 mA cm –2, respectively, setting a new benchmark for the electrocatalysis of OER.
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Cites
Benchmarking Heterogeneous Electrocatalysts for the Oxygen Evolution Reaction
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Cited by
Guo, W., Wang, Z., Zhou, Y., Wang, T., Zhu, G., Akhtar, F., Koudakan, P. A., Zhang, B., Jiang, J., Pan, S., et al. (2025) · Journal of Materials Chemistry A · doi:10.1039/d5ta02960k · Cited by 8
Metadata
- Authors
- Yin, Z.-H., Huang, Y., Song, K., Li, T.-T., Cui, J.-Y., Meng, C., Zhang, H., & Wang, J.-J.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2024-02-29
- Volume
- 146
- Issue
- 10
- Pages
- 6846-6855
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W4392355207
- Cited by
- 269
- References
- 47
- FWCI
- 17.77
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yin, Z.-H., Huang, Y., Song, K., Li, T.-T., Cui, J.-Y., Meng, C., Zhang, H., & Wang, J.-J. (2024). Ir Single Atoms Boost Metal–Oxygen Covalency on Selenide-Derived NiOOH for Direct Intramolecular Oxygen Coupling. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.3c13746
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