Ligand-tuning of coordination compound for improved oxygen evolution

doi:10.1016/j.cjche.2024.07.023

Chinese Journal of Chemical Engineering ›› 2024, Vol. 76 ›› Issue (12): 292-300.DOI: 10.1016/j.cjche.2024.07.023

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Ligand-tuning of coordination compound for improved oxygen evolution

Kunpeng Yang¹, Yuanjun Liu¹, Yuyu Liu¹, Xingmei Guo¹, Xiangjun Zheng¹, Junhao Zhang¹, Guoxing Zhu^2,3

1. School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 202018, China;
2. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 202013, China;
3. Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China

Received:2024-05-20 Revised:2024-07-19 Accepted:2024-07-22 Online:2024-09-17 Published:2024-12-28
Contact: Yuanjun Liu,E-mail:liuyuanjun@just.edu.cn;Guoxing Zhu,E-mail:zhuguoxing@ujs.edu.cn
Supported by:
The authors are grateful for the National Natural Science Foundation of China (21776115, 51902140), Six talent peaks project in Jiangsu Province (XCL-2018-017), and Open Project of Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China (2024A05D).

Ligand-tuning of coordination compound for improved oxygen evolution

Kunpeng Yang¹, Yuanjun Liu¹, Yuyu Liu¹, Xingmei Guo¹, Xiangjun Zheng¹, Junhao Zhang¹, Guoxing Zhu^2,3

1. School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 202018, China;
2. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 202013, China;
3. Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China

通讯作者: Yuanjun Liu,E-mail:liuyuanjun@just.edu.cn;Guoxing Zhu,E-mail:zhuguoxing@ujs.edu.cn
基金资助:
The authors are grateful for the National Natural Science Foundation of China (21776115, 51902140), Six talent peaks project in Jiangsu Province (XCL-2018-017), and Open Project of Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China (2024A05D).

Abstract

Abstract: Controllable regulation of the reconstruction process for the pre-catalysts towards oxygen evolution remains as a great challenge. In this study, we report a bi-ligand strategy to facilitate the structural transformation of coordination compounds to metal oxyhydroxides during oxygen evolution with enhanced activity. A coordination compound consisting of 1,1'-ferrocene acid (Fc) and Ni²⁺ was synthesized, in which terephthalic acid was introduced. The second ligand of terephthalic acid facilitates the reconstruction process, inducing an enhanced catalytic activity. In 1 mol·L^-1 KOH aqueous solution, the optimized catalyst can drive a current density of 10 mA·cm^-2 under a lower overpotential of 220 mV. Using this catalyst, zinc-air batteries can be prepared. The obtained zinc-air battery presents a large specific capacity of 718 mA·h·g^-1 with excellent cycling stability for over 100 h far exceeding that of Pt/C+RuO₂ battery fabricated with commercial catalysts. The excellent performance and low cost of this catalyst will open up broad prospects for the development of advanced systems for water electrolysis and zinc air batteries.

Key words: Catalysis, Electrochemistry, Zinc-air battery, Coordination compounds, Oxygen evolution

摘要： Controllable regulation of the reconstruction process for the pre-catalysts towards oxygen evolution remains as a great challenge. In this study, we report a bi-ligand strategy to facilitate the structural transformation of coordination compounds to metal oxyhydroxides during oxygen evolution with enhanced activity. A coordination compound consisting of 1,1'-ferrocene acid (Fc) and Ni²⁺ was synthesized, in which terephthalic acid was introduced. The second ligand of terephthalic acid facilitates the reconstruction process, inducing an enhanced catalytic activity. In 1 mol·L^-1 KOH aqueous solution, the optimized catalyst can drive a current density of 10 mA·cm^-2 under a lower overpotential of 220 mV. Using this catalyst, zinc-air batteries can be prepared. The obtained zinc-air battery presents a large specific capacity of 718 mA·h·g^-1 with excellent cycling stability for over 100 h far exceeding that of Pt/C+RuO₂ battery fabricated with commercial catalysts. The excellent performance and low cost of this catalyst will open up broad prospects for the development of advanced systems for water electrolysis and zinc air batteries.

关键词: Catalysis, Electrochemistry, Zinc-air battery, Coordination compounds, Oxygen evolution

Kunpeng Yang, Yuanjun Liu, Yuyu Liu, Xingmei Guo, Xiangjun Zheng, Junhao Zhang, Guoxing Zhu. Ligand-tuning of coordination compound for improved oxygen evolution[J]. Chinese Journal of Chemical Engineering, 2024, 76(12): 292-300.

Kunpeng Yang, Yuanjun Liu, Yuyu Liu, Xingmei Guo, Xiangjun Zheng, Junhao Zhang, Guoxing Zhu. Ligand-tuning of coordination compound for improved oxygen evolution[J]. 中国化学工程学报, 2024, 76(12): 292-300.

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Ligand-tuning of coordination compound for improved oxygen evolution

Ligand-tuning of coordination compound for improved oxygen evolution

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