Volume 21, Issue 4 2409627
Research Article

Ultrastable Seawater Oxidation at Ampere-level Current Densities with Corrosion-resistant CoCO3/CoFe Layered Double Hydroxide Electrocatalyst

Yongchao Yao

Yongchao Yao

Department of Laboratory Medicine, Precision Medicine Translational Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

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Chang Zou

Chang Zou

Department of Laboratory Medicine, Precision Medicine Translational Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

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Shengjun Sun

Shengjun Sun

Center for High Altitude Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong, 250014 China

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Yaxin Guo

Yaxin Guo

Department of Laboratory Medicine, Precision Medicine Translational Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong, 250014 China

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Shaohuan Hong

Shaohuan Hong

MOE Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 211189 China

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Zhangping Cai

Zhangping Cai

Department of Laboratory Medicine, Precision Medicine Translational Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

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Chengli Yang

Chengli Yang

Department of Laboratory Medicine, Precision Medicine Translational Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

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Weihua Zhuang

Weihua Zhuang

Department of Laboratory Medicine, Precision Medicine Translational Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

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Fengming Luo

Fengming Luo

Center for High Altitude Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

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Mohamed S. Hamdy

Mohamed S. Hamdy

Department of Chemistry, College of Science, King Khalid University, Abha, 61413 Saudi Arabia

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Fatma A. Ibrahim

Fatma A. Ibrahim

Department of Chemistry, College of Science, King Khalid University, Abha, 61413 Saudi Arabia

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Feng Gong

Corresponding Author

Feng Gong

MOE Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 211189 China

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

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Yanan Li

Corresponding Author

Yanan Li

Department of Laboratory Medicine, Precision Medicine Translational Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

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

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Xuping Sun

Corresponding Author

Xuping Sun

Center for High Altitude Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong, 250014 China

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

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Wenchuang (Walter) Hu

Corresponding Author

Wenchuang (Walter) Hu

Department of Laboratory Medicine, Precision Medicine Translational Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041 China

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

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First published: 10 December 2024
Citations: 8

Abstract

Hydrogen is an essential energy resource, playing a pivotal role in advancing a sustainable future. Electrolysis of seawater shows great potential for large-scale hydrogen production but encounters challenges such as electrode corrosion caused by chlorine evolution. Herein, a durable CoCO3/CoFe layered double hydroxide (LDH) electrocatalyst is presented for alkaline seawater oxidation, showcasing resistance to corrosion and stable operation exceeding 1,000 h at a high current density of 1 A cm−2. The results indicate that CoCO3 within the electrocatalyst undergoes conversion into CoOOH and releases CO32− during electrolysis. The incorporation of CO32− within its layers and the anchoring of the electrocatalyst's surface prevent the adverse adsorption of chloride ions, enhancing resistance to chloride ion corrosion, thereby protecting the active sites of the electrocatalyst effectively.

Conflict of Interest

The authors declare no conflict of interest.

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