Volume 42, Issue 1 pp. 48-54
Concise Report

In-situ Generation of Hydroxyl Layers in CoO@FeSe2 Catalyst for High Selectivity Seawater Electrolysis

Suyang Feng

Suyang Feng

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228 China

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Peng Rao

Peng Rao

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228 China

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Xiao Wu

Xiao Wu

National Energy Group Ledong Power Generation Co., Ltd., Ledong, Hainan, 572539 China

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Ke Li

Ke Li

National Energy Group Ledong Power Generation Co., Ltd., Ledong, Hainan, 572539 China

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Anyuan Qi

Anyuan Qi

National Energy Group Ledong Power Generation Co., Ltd., Ledong, Hainan, 572539 China

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Yanhui Yu

Yanhui Yu

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228 China

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Jing Li

Corresponding Author

Jing Li

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228 China

E-mail: [email protected] (J. Li); [email protected] (S. Wang); [email protected] (X. Tian); [email protected] (Z. Kang);Search for more papers by this author
Peilin Deng

Peilin Deng

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228 China

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Yuliang Yuan

Yuliang Yuan

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228 China

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Shaolei Wang

Corresponding Author

Shaolei Wang

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, School of Chemistry, Northeast Normal University, Changchun, Jilin, 130024 China

E-mail: [email protected] (J. Li); [email protected] (S. Wang); [email protected] (X. Tian); [email protected] (Z. Kang);Search for more papers by this author
Xinlong Tian

Corresponding Author

Xinlong Tian

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228 China

E-mail: [email protected] (J. Li); [email protected] (S. Wang); [email protected] (X. Tian); [email protected] (Z. Kang);Search for more papers by this author
Zhenye Kang

Corresponding Author

Zhenye Kang

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228 China

E-mail: [email protected] (J. Li); [email protected] (S. Wang); [email protected] (X. Tian); [email protected] (Z. Kang);Search for more papers by this author
First published: 04 September 2023
Citations: 1

Comprehensive Summary

Seawater electrolysis holds great promise for hydrogen production in the future, while the development of anodic catalysts has been severely hampered by the side-reaction, chloride evolution reaction. In this work, nano-flower-cluster structured CoO@FeSe2/CF catalysts are synthesized via a scalable electrodeposition technique, and the performance is systematically studied. The oxygen evolution reaction (OER) overpotential of CoO@FeSe2/CF is 267 mV at 100 mA·cm−2, which is significantly lower than that of the IrO2 catalyst (435 mV). Additionally, the catalyst shows high selectivity for OER (97.9%) and almost no loss of activity after a durability test for 1100 h. The impressive performance is attributed to the dense rod-like structure with abundant active centers after electrochemical activation and the in-situ generated CoOOH and FeOOH that improve the catalytic activity of the catalyst. The synergistic effect induced by the non-uniform structure endows the catalyst with excellent stability.image

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