Multilayer stabilization for fabricating high-loading single-atom catalysts.

Autor: Zhou Y; Max Planck Institute for Polymer Research, 55128, Mainz, Germany.; School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China., Tao X; Max Planck Institute for Polymer Research, 55128, Mainz, Germany.; School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China., Chen G; Center for Advancing Electronics Dresden (Cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany., Lu R; State Key Laboratory of Silicate Materials for Architectures, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China., Wang D; Max Planck Institute for Polymer Research, 55128, Mainz, Germany., Chen MX; Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China., Jin E; Max Planck Institute for Polymer Research, 55128, Mainz, Germany., Yang J; School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China., Liang HW; Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China., Zhao Y; State Key Laboratory of Silicate Materials for Architectures, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China., Feng X; Center for Advancing Electronics Dresden (Cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany., Narita A; Max Planck Institute for Polymer Research, 55128, Mainz, Germany. akimitsu.narita@oist.jp.; Organic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, 904-0495, Japan. akimitsu.narita@oist.jp., Müllen K; Max Planck Institute for Polymer Research, 55128, Mainz, Germany. muellen@mpip-mainz.mpg.de.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2020 Nov 18; Vol. 11 (1), pp. 5892. Date of Electronic Publication: 2020 Nov 18.
DOI: 10.1038/s41467-020-19599-8
Abstrakt: 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.
Databáze: MEDLINE
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