Chinese Journal of Catalysis ›› 2025, Vol. 69: 17-34.DOI: 10.1016/S1872-2067(24)60204-4

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Advances in spin regulation of M-N-C single-atom catalysts and their applications in electrocatalysis

Jiayi Cuia,b, Xintao Yua,b, Xueyao Lia,b, Jianmin Yua,b, Lishan Penga,b,*(), Zidong Weic,*()   

  1. aKey Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, Jiangxi, China
    bSchool of Rare Earths, University of Science and Technology of China, Hefei 230026, Anhui, China
    cNational Key Laboratory of Special Chemical Power Sources, National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
  • Received:2024-11-10 Accepted:2024-11-14 Online:2025-02-18 Published:2025-02-10
  • Contact: E-mail: lspeng@gia.cas.cn (L. Peng), zdwei@cqu.edu.cn (Z. Wei).
  • About author:Lishan Peng (Ganjiang Innovation Academy, Chinese Academy of Sciences) obtained his B.S. and Ph.D. degrees in 2014 and 2019, respectively, at Chongqing University. Subsequently, he worked as a postdoctoral researcher at Westlake University, the University of Auckland (New Zealand) and the Technical Institute of Physics and Chemistry, Chinese Academy of Sciences. His research interests include the design and theoretical study of advanced electrocatalysts for energy storage and conversion. He has coauthored more than 80 peer-reviewed papers with citation over 5000 times.
    Zidong Wei (School of Chemistry and Chemical Engineering, Chongqing University) received Bachelor degree from Shaanxi University of Science and Technology (1984), and Ph.D. degree from Tianjin University (1994). He has been in the field of electrochemical catalysis for more than 30 years and has published more than 300 papers with citation over 22000 times. He has been the Chief Scientist of the National Key Research and Development Program and the Chief Scientist of the National Natural Science Foundation. He edited or participated in the compilation of “Electrochemical Catalysis”, “Chemical Process Intensification”, “Electrocatalysis”, “Electrocatalytic Oxygen Reduction Reaction” and other books. He won the first, second and third prizes of provincial and ministerial level natural sciences and technological progress once each. He is a council member in the Chemical Industry and Engineering Society of China, and Chinese Chemical Society.
  • Supported by:
    National Natural Science Foundation of China(22209186);National Natural Science Foundation of China(22479149);Self-deployed Projects of Ganjiang Innovation Academy, CAS(E355F006);Natural Science Foundation of Jiangxi Province(20242BAB23016);"Double Thousand Plan" of Jiangxi Province(jxsq2023101056);Key Research and Development Program of Jiangxi Province(20223BBG74004);Key Research and Development Program of Jiangxi Province(20232BBG70003);Youth Innovation Promotion Association, Chinese Academy of Sciences(2023343)

Abstract:

To enhance the efficiency of green energy harvesting and pollutant degradation, significant efforts are focused on identifying highly effective catalysts. Metal-nitrogen-carbon single-atom catalysts (M-N-C SACs) have emerged as pivotal in catalysis due to their unique geometric structures, electronic states, and catalytic capabilities. Notably, the incorporation of magnetic elements at the active centers of these single-atom catalysts has garnered attention for their role in efficient electrochemical conversions. The orientation of spin states critically influences the adsorption and formation of reactants and intermediates, making the precise control of spin alignment and magnetic moments essential for reducing energy barriers and overcoming spin-related limitations, thereby enhancing catalytic activity. Thus, understanding the catalytic role of spin and modulating spin density at M-N-C single-atom centers holds profound fundamental and technological significance. In this review, we elucidate the fundamental mechanisms governing spin states and its influence in electrocatalysis. We then discuss various strategies for adjusting the spin states of active centers in the M-N-C SACs and the associated characterization techniques. Finally, we outline challenges and future perspectives of spin regulation for high-performance catalysts. This review provides deep insights into the micro-mechanisms of catalytic phenomena and offers a roadmap for designing spin-regulated catalysts for advanced energy applications.

Key words: Electrocatalysis, M-N-C materials, Single-atom catalyst, Electron spin effect, Spin regulation