Volume 136, Issue 6 e202317022
Forschungsartikel

Rapid Surface Reconstruction of Pentlandite by High-Spin State Iron for Efficient Oxygen Evolution Reaction

Zhengyan Du

Zhengyan Du

Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012 China

These authors contributed equally to this work.

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Zeshuo Meng

Zeshuo Meng

Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012 China

These authors contributed equally to this work.

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Xiliang Gong

Xiliang Gong

Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012 China

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Zeyu Hao

Zeyu Hao

Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012 China

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Xin Li

Xin Li

Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012 China

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Haoteng Sun

Corresponding Author

Haoteng Sun

Department of Chemistry, Brown University, Providence, RI 02912 USA

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Prof. Xiaoying Hu

Corresponding Author

Prof. Xiaoying Hu

College of Science and Laboratory of Materials Design and Quantum Simulation, Changchun University, Changchun, 130022 China

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Prof. Shansheng Yu

Corresponding Author

Prof. Shansheng Yu

Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012 China

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Prof. Hongwei Tian

Corresponding Author

Prof. Hongwei Tian

Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012 China

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First published: 27 December 2023
Citations: 8

Abstract

Triggering rapid reconstruction reactions holds the potential to approach the theoretical limits of the oxygen evolution reaction (OER), and spin state manipulation has shown great promise in this regard. In this study, the transition of Fe spin states from low to high was successfully achieved by adjusting the surface electronic structure of pentlandite. In situ characterization and kinetic simulations confirmed that the high-spin state of Fe promoted the accumulation of OH on the surface and accelerated electron transfer, thereby enhancing the kinetics of the reconstruction reaction. Furthermore, theoretical calculations revealed that the lower d-band center of high-spin Fe optimized the adsorption of active intermediates, thereby enhancing the reconstruction kinetics. Remarkably, pentlandites with high-spin Fe exhibited ultra-low overpotential (245 mV @ 10 mA cm−2) and excellent stability. These findings provided new insights for the design and fabrication of highly active OER electrocatalysts.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

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