Volume 21, Issue 12 2500616
Research Article

Electronic Structure Tunable Metallosupramolecular Polymers as Bifunctional Electrocatalysts for Rechargeable Zn-Air Battery

Rui-Lin Chai

Rui-Lin Chai

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

College of Sciences, Institute of Molecular Plus, Tianjin University, Tianjin, 300072 P. R. China

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Shi-Bo Han

Shi-Bo Han

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

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Li-Wei Wang

Li-Wei Wang

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

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Sheng-Hua Li

Corresponding Author

Sheng-Hua Li

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Hui Pan

Hui Pan

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

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Hao-Bo Zhang

Hao-Bo Zhang

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

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Xian-Yi Tu

Xian-Yi Tu

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

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Zi-Ying Wang

Zi-Ying Wang

College of Sciences, Institute of Molecular Plus, Tianjin University, Tianjin, 300072 P. R. China

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Xiaocong Wang

Xiaocong Wang

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

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Guang-Yue Li

Guang-Yue Li

College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063210 P. R. China

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Jin Zhao

Jin Zhao

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

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Lifeng Zhang

Corresponding Author

Lifeng Zhang

College of Sciences, Institute of Molecular Plus, Tianjin University, Tianjin, 300072 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Xin Li

Xin Li

Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192 P. R. China

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Qian Zhao

Corresponding Author

Qian Zhao

College of Sciences, College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin, 300457 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 28 February 2025
Citations: 1
This paper is dedicated to Professor Yu Liu on the Occasion of His 70th Birthday

Abstract

Metallosupramolecular polymers (MSPs) have shown great potential in the area of oxygen electrocatalysis due to their tunable electronic structure, and predictable coordination environment. Further exploration of structure−performance relationships of oxygen electrocatalysts is crucial for designing highly efficient catalysts. Herein, a strategy is proposed to prepare MSP-based bifunctional oxygen electrocatalysts with different oxygen electrocatalytic preferences (Co-AQ and Co-AN) by adjusting the electronic structure of organic linkers. The electronic effects of organic linkers significantly influence the adsorbate evolution mechanism. Co-AQ, with an electron-withdrawing linker, demonstrated superior OER activity among the two with an overpotential of 280 mV at 10 mA cm−2 and 340 mV at 50 mA cm−2. In contrast, Co-AN, with an electron-donating linker, exhibited outstanding ORR activity with a large limiting current density of 6.14 mA cm−2. Furthermore, the Co-AQ-based Zn–air battery showed a high power density (135 mW cm−2) and excellent cycling stability of 100 h. This work presents a novel approach for adjusting bifunctional oxygen electrocatalysis performance and further reveals the structure−performance relationships of oxygen electrocatalysts.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.