Multilayer stabilization for fabricating high-loading single-atom catalysts

Yazhou Zhou, Xiafang Tao, Guangbo Chen, Ruihu Lu, Ding Wang, Ming-Xi Chen, Enquan Jin, Juan Yang, Hai-Wei Liang, Yan Zhao, Xinliang Feng, Akimitsu Narita () and Klaus Müllen ()
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Yazhou Zhou: Max Planck Institute for Polymer Research
Xiafang Tao: Max Planck Institute for Polymer Research
Guangbo Chen: Technische Universität Dresden
Ruihu Lu: Wuhan University of Technology
Ding Wang: Max Planck Institute for Polymer Research
Ming-Xi Chen: University of Science and Technology of China
Enquan Jin: Max Planck Institute for Polymer Research
Juan Yang: Jiangsu University
Hai-Wei Liang: University of Science and Technology of China
Yan Zhao: Wuhan University of Technology
Xinliang Feng: Technische Universität Dresden
Akimitsu Narita: Max Planck Institute for Polymer Research
Klaus Müllen: Max Planck Institute for Polymer Research

Nature Communications, 2020, vol. 11, issue 1, 1-11

Abstract: Abstract Metal single-atom catalysts (M-SACs) have emerged as an attractive concept for promoting heterogeneous reactions, but the synthesis of high-loading M-SACs remains a challenge. Here, we report a multilayer stabilization strategy for constructing M-SACs in nitrogen-, sulfur- and fluorine-co-doped graphitized carbons (M = Fe, Co, Ru, Ir and Pt). Metal precursors are embedded into perfluorotetradecanoic acid multilayers and are further coated with polypyrrole prior to pyrolysis. Aggregation of the metals is thus efficiently inhibited to achieve M-SACs with a high metal loading (~16 wt%). Fe-SAC serves as an efficient oxygen reduction catalyst with half-wave potentials of 0.91 and 0.82 V (versus reversible hydrogen electrode) in alkaline and acid solutions, respectively. Moreover, as an air electrode in zinc–air batteries, Fe-SAC demonstrates a large peak power density of 247.7 mW cm−2 and superior long-term stability. Our versatile method paves an effective way to develop high-loading M-SACs for various applications.

Date: 2020
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DOI: 10.1038/s41467-020-19599-8

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