Chinese Journal of Catalysis ›› 2024, Vol. 60: 42-67.DOI: 10.1016/S1872-2067(24)60032-X

• Reviews • Previous Articles     Next Articles

Ammonia electrosynthesis on carbon-supported metal single-atom catalysts

Mu-Lin Lia, Yi-Meng Xiea, Jingting Songa, Ji Yanga,*(), Jin-Chao Donga, Jian-Feng Lia,b,*()   

  1. aCollege of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, College of Physical Science and Technology, Xiamen University, Xiamen 361005, Fujian, China
    bInnovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, Fujian, China
  • Received:2024-03-13 Accepted:2024-04-02 Online:2024-05-18 Published:2024-05-20
  • Contact: E-mail: chem.yang@xmu.edu.cn (J. Yang), li@xmu.edu.cn (J.-F. Li).
  • About author:Ji Yang graduated with a Ph.D. from Xiamen University in 2022. He carried out postdoctoral research in Jian-Feng Li’s group at Xiamen University from 2022 to 2024. His study focuses on the structural evolution of single-atom catalysts under electrocatalytic process by employing in-situ/operando Raman/XAFS characterizations. He has published more than 26 peer-reviewed papers.
    Jian-Feng Li is a full Professor of Chemistry at Xiamen University. He received his Bachelor’s degree in Chemistry from Zhejiang University in 2003 and his Ph.D. degree in Chemistry from Xiamen University in 2010. He worked as a post-doctor at the University of Bern and ETH Zurich in Switzerland from 2011 to 2014. Professor Li’s research interests include plasmonic core shell nanostructures, surface-enhanced Raman spectroscopy, electrochemistry, and surface catalysis. He has published more than 240 peer-reviewed papers with a total citation of over 15000, including Nature, Nature Energy, Nature Mater., Nature Nanotechnol., Nature Catal., Chem. Rev., etc. He is a Senior Editor of J. Phys. Chem. A/B/C.
  • Supported by:
    National Key Research and Development Program of China(2023YFA1508004);National Natural and Science Foundation of China(21925404);National Natural and Science Foundation of China(22021001);National Natural and Science Foundation of China(21991151);National Natural and Science Foundation of China(22222903);National Natural and Science Foundation of China(T2293692);China Postdoctoral Science Foundation(2023M742909);Beijing National Laboratory for Molecular Sciences(BNLMS202305);National Science Fund for Fostering Talents in Basic Science(NFFTBS,J1310024)

Abstract:

Ammonia, a feedstock platform for fertilizer and pharmaceutical production, is regarded as a zero-carbon energy carrier. The electrochemical synthesis of ammonia, powered by clean and renewable electricity, has garnered increased attention as an alternative to the Haber-Bosch process. Very recently, single-atom catalysts (SACs) have become highly effective electrocatalysts for such electrochemical transformation, where the isolated metal sites ensure the high atomic utilization efficiency as well as the prevention of nitrogen-nitrogen coupling. In this review, we focus on the recent progress of single-atom catalysts in electrochemical ammonia synthesis and briefly introduce nitrogen cycles in both natural and artificial ecosystems, followed by a discussion of catalyst design by theoretical and experimental methods. Synthesis routes from different nitrogen sources, including dinitrogen (N2) and nitrogen oxides (NOx), are also highlighted. Besides, the catalysis dynamics as an indispensable section is presented and discussed in-depth. Finally, we tackle challenges and offer perspectives, aspiring to provide insightful guidance for researchers in this community striving for advanced ammonia electrosynthesis.

Key words: Ammonia synthesis, Nitrogen-transforming reaction, Electrochemical reduction, Single-atom catalyst, Dinitrogen, Nitrogen oxides