Dynamically Dual‐Center Coupled Synergistic Catalysis for Highly Efficient Oxygen Reduction

The oxygen reduction reaction (ORR) suffers from inherent kinetic limitations arising from the competitive adsorption behavior of *OOH intermediates and their divergent conversion pathways toward either the 4e⁻-dominant route or the 2e⁻-peroxide byproduct. Conventional single-component catalysts fundamentally lack temporal-spatial control to simultaneously accelerate O─O bond cleavage while suppressing *H<sub>2</sub>O<sub>2</sub> desorption. To overcome this kinetic dilemma, herein, we propose a dynamically dual-center coupled synergistic (DCCS) catalytic mechanism enabled by precisely engineered PdRh─Pt nanosheet binary-component interfaces. Multidimensional in situ synchrotron radiation spectroscopy and theoretical studies reveal that the activated 4e⁻ pathway primarily occurs at PdRh sites. Additionally, Pt centers selectively reduce *OOH to *O and *H<sub>2</sub>O<sub>2</sub>, whereas neighboring PdRh sites facilitate ultrafast *H<sub>2</sub>O<sub>2</sub> migration and dissociation, effectively complementing the 4e⁻-dominant pathway. Hence, the DCCS catalysis redirects traditionally divergent product pathways toward a singular target product. This interfacial kinetic synergy achieves ultrahigh 4e⁻ kinetics, demonstrated by a six-fold increase of turnover frequency compared to that of commercial Pt/C. Moreover, the derived rechargeable Zn‒air batteries demonstrate exceptional stability over 200 h, establishing a new design principle for breaking kinetics trade-offs in heterogeneous catalysis through molecularly scheduling reaction pathways.

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Publication Details

Journal
Angewandte Chemie International Edition
Published
2025-06-21
DOI
https://doi.org/10.1002/anie.202510188
Citations
6
Primary Topic
Electrocatalysts for Energy Conversion
Type
article
Field-Weighted Citation Impact
2.18

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article

Dynamically Dual‐Center Coupled Synergistic Catalysis for Highly Efficient Oxygen Reduction

Qizheng An, Wanlin Zhou, Chenyu Yang, Yuhao Zhang et al.
6 citations
Angewandte Chemie International Edition
Electrocatalysts for Energy Conversion
2.18
article

Dynamically Dual‐Center Coupled Synergistic Catalysis for Highly Efficient Oxygen Reduction

Qizheng An, Wanlin Zhou, Chenyu Yang, Yuhao Zhang, Shuowen Bo, Jiulong Wu, Qinghua Liu, Jing Zhang, Baojie Li, Xin Chen, Jingjing Jiang
article en
6 citations

Abstract

The oxygen reduction reaction (ORR) suffers from inherent kinetic limitations arising from the competitive adsorption behavior of *OOH intermediates and their divergent conversion pathways toward either the 4e⁻-dominant route or the 2e⁻-peroxide byproduct. Conventional single-component catalysts fundamentally lack temporal-spatial control to simultaneously accelerate O─O bond cleavage while suppressing *H<sub>2</sub>O<sub>2</sub> desorption. To overcome this kinetic dilemma, herein, we propose a dynamically dual-center coupled synergistic (DCCS) catalytic mechanism enabled by precisely engineered PdRh─Pt nanosheet binary-component interfaces. Multidimensional in situ synchrotron radiation spectroscopy and theoretical studies reveal that the activated 4e⁻ pathway primarily occurs at PdRh sites. Additionally, Pt centers selectively reduce *OOH to *O and *H<sub>2</sub>O<sub>2</sub>, whereas neighboring PdRh sites facilitate ultrafast *H<sub>2</sub>O<sub>2</sub> migration and dissociation, effectively complementing the 4e⁻-dominant pathway. Hence, the DCCS catalysis redirects traditionally divergent product pathways toward a singular target product. This interfacial kinetic synergy achieves ultrahigh 4e⁻ kinetics, demonstrated by a six-fold increase of turnover frequency compared to that of commercial Pt/C. Moreover, the derived rechargeable Zn‒air batteries demonstrate exceptional stability over 200 h, establishing a new design principle for breaking kinetics trade-offs in heterogeneous catalysis through molecularly scheduling reaction pathways.

Angewandte Chemie International EditionVol. 64(35)
University of Science and Technology of China (CN), Southwest Petroleum University (CN), Zhengzhou University (CN), State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (CN), National Synchrotron Radiation Laboratory (CN)
Salt Science Research Foundation, National Natural Science Foundation of China, University of Science and Technology of China, National Synchrotron Radiation Laboratory, Natural Science Foundation of Anhui Province
Openalex Percentile: Top 12%
Electrocatalysts for Energy Conversion
2.18
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