Volume 136, Issue 1 e202315238
Forschungsartikel

Gram-level NH3 Electrosynthesis via NOx reduction on a Cu Activated Co Electrode

Dong-Xue Liu

Dong-Xue Liu

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

These authors contributed equally to this work.

Contribution: ​Investigation (lead), Writing - original draft (lead), Writing - review & editing (supporting)

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Zhe Meng

Zhe Meng

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

These authors contributed equally to this work.

Contribution: Writing - original draft (supporting)

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Prof. Yong-Fu Zhu

Prof. Yong-Fu Zhu

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

Contribution: Resources (supporting)

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Xue-Feng Sun

Xue-Feng Sun

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

Contribution: ​Investigation (supporting), Methodology (supporting)

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Xin Deng

Xin Deng

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

Contribution: ​Investigation (supporting)

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Dr. Miao-Miao Shi

Corresponding Author

Dr. Miao-Miao Shi

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

Contribution: Conceptualization (supporting), Data curation (supporting), ​Investigation (supporting), Methodology (supporting), Project administration (supporting), Visualization (supporting), Writing - original draft (supporting), Writing - review & editing (supporting)

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Qi Hao

Qi Hao

School of Engineering, Westlake University, Hangzhou, Zhejiang, 310030 China

Contribution: Methodology (supporting)

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Xia Kang

Xia Kang

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

Contribution: ​Investigation (supporting)

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Dr. Tian-Yi Dai

Dr. Tian-Yi Dai

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

Contribution: Methodology (supporting), Software (supporting), Visualization (supporting), Writing - original draft (supporting)

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Prof. Hai-Xia Zhong

Corresponding Author

Prof. Hai-Xia Zhong

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China

Contribution: Conceptualization (supporting), Supervision (supporting), Writing - original draft (supporting), Writing - review & editing (equal)

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Prof. Jun-Min Yan

Corresponding Author

Prof. Jun-Min Yan

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

Contribution: Conceptualization (lead), Project administration (lead), Resources (lead), Supervision (lead), Writing - original draft (supporting), Writing - review & editing (lead)

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Prof. Qing Jiang

Prof. Qing Jiang

Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China

Contribution: Resources (supporting), Software (supporting)

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First published: 12 November 2023
Citations: 5

Abstract

Ambient electrochemical ammonia (NH3) synthesis is one promising alternative to the energy-intensive Haber–Bosch route. However, the industrial requirement for the electrochemical NH3 production with amperes current densities or gram-level NH3 yield remains a grand challenge. Herein, we report the high-rate NH3 production via NO2 reduction using the Cu activated Co electrode in a bipolar membrane (BPM) assemble electrolyser, wherein BPM maintains the ion balance and the liquid level of electrolyte. Benefited from the abundant Co sites and optimal structure, the target modified Co foam electrode delivers a current density of 2.64 A cm−2 with the Faradaic efficiency of 96.45 % and the high NH3 yield rate of 279.44 mg h−1 cm−2 in H-type cell using alkaline electrolyte. Combined with in situ experiments and theoretical calculations, we found that Cu optimizes the adsorption behavior of NO2 and facilitates the hydrogenation steps on Co sites toward a rapid NO2 reduction process. Importantly, this activated Co electrode affords a large NH3 production up to 4.11 g h−1 in a homemade reactor, highlighting its large-scale practical feasibility.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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