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Recent progresses in the single-atom catalysts for the oxygen reduction reaction

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Abstract

The development of high-performance electrocatalysts is critical for the widespread applications of the sustainable energy technologies. In this context, single-atom catalysts (SACs) with isolated metal sites have attracted more attention because of their maximum atom utilization and remarkable electrocatalytic performance. However, the high surface energy often results in a low loading of the single metal atoms, limiting their practical applications. Herein, we give an up-to-date review on the progress for the SACs. The research progress of noble metal SACs, transition metal SACs, single-atom alloy SACs, and double metal SACs is summarized. The advantages and disadvantages of synthesis strategies including wet chemistry, atomic layer deposition, and high-temperature pyrolysis are discussed. We also propose some new research direction to obtain the high-performance SACs. It is expected to realize widely applications of SACs.

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Fig. 1

Copyright 2021, Elsevier. b Schematic pathway for the ORR on N-doped carbon materials [8]. Copyright 2016, Science

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Funding

This work was supported by the National Natural Science Foundation of China (Contracts 51872162 and 11890702), Universities Twenty Foundational Items of **an City (2021GXRC039), and Qilu University of Technology (Shandong Academy of Sciences).

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  1. School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), **an, 250353, China

    Yalong Li, **aolong Xu, Zizheng Ai, Baoguo Zhang, Dong Shi, Mingzhi Yang, Haixiao Hu, Yongliang Shao, Yongzhong Wu & **aopeng Hao

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  1. Yalong Li
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Li, Y., Xu, X., Ai, Z. et al. Recent progresses in the single-atom catalysts for the oxygen reduction reaction. Ionics 29, 455–481 (2023). https://doi.org/10.1007/s11581-022-04842-7

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