Direct Oxygen‐Oxygen Cleavage through Optimizing Interatomic Distances in Dual Single‐atom Electrocatalysts for Efficient Oxygen Reduction Reaction
Open accessAbstract
The oxygen reduction reaction (ORR) on transition single‐atom catalysts (SACs) is sustainable in energy‐conversion devices. However, the atomically controllable fabrication of single‐atom sites and the sluggish kinetics of ORR have remained challenging. Here, we accelerate the kinetics of acid ORR through a direct O−O cleavage pathway through using a bi‐functional ligand‐assisted strategy to pre‐control the distance of hetero‐metal atoms. Concretely, the as‐synthesized Fe−Zn diatomic pairs on carbon substrates exhibited an outstanding ORR performance with the ultrahigh half‐wave potential of 0.86 V vs. RHE in acid electrolyte. Experimental evidence and density functional theory calculations confirmed that the Fe−Zn diatomic pairs with a specific distance range of around 3 Å, which is the key to their ultrahigh activity, average the interaction between hetero‐diatomic active sites and oxygen molecules. This work offers new insight into atomically controllable SACs synthesis and addresses the limitations of the ORR dissociative mechanism.
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Increasing the active site density has been proven to be an effective strategy to increase the activity of the catalyzer.
“increasing the active site density has been proven to be an effective strategy to increase the activity of the catalyzer, which can be achieved by constructing the microstructure of the carbon substrate.37−41”
From Enhanced Water Splitting Electrocatalysis with Heterointerfacial Cobalt Phosphide In Situ Supported on a Cellulose-Derived Carbon Aerogel (2025) · cites this paper as [39]
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Cited by
Sorted by citations
Shen, T., Chen, X., Hu, Z., Yan, Z., Yang, L., Sun, H., Zhang, R., & Yu, H.-Y. (2025) · Langmuir · doi:10.1021/acs.langmuir.4c03958 · Cited by 9 · see citing works
Self-citation
- Authors
- Xie, Y., Chen, X., Sun, K., Zhang, J., Lai, W., Liu, H., & Wang, G.
- Affiliations
- University of Technology Sydney (AU)
- University of Science and Technology Beijing (CN)
- Tsinghua University (CN)
- University of Wollongong (AU)
- Corresponding author
- Zhang, Jinqiang
- Lai, Wei‐Hong
- Liu, Hao
- Wang, Guoxiu
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2023-03-20
- Volume
- 62
- Issue
- 17
- Pages
- e202301833-e202301833
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W4322616716
- Cited by
- 197
- References
- 0
- Citations by year
- 2026: 31 · 2025: 60 · 2024: 81 · 2023: 25
- FWCI
- 9.41
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Angewandte Chemie International Edition (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Research Online (University of Wollongong) (submittedVersion)
- Figshare (submittedVersion)
- Funders
- Australian Research Council (DP180102297, DP200101249, DP210101389, IH180100020, FT180100705)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
- Keywords
- oxygen reduction reaction, single-atom catalysts, O-O bond cleavage, interatomic distances, ligand-assisted synthesis, bifunctional electrocatalysts, acidic electrolyte, half-wave potential, dissociative mechanism, carbon-supported catalysts
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