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. 2024 Feb 26;15:1719. doi: 10.1038/s41467-024-46175-1

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — a LSV curves of Fe-SACs with different sphere diameter in O₂-saturated 0.1 M KOH at 1600 rpm for evaluating ORR activity. b ORR J_k at 0.85 V (vs. RHE) and E_1/2 of different Fe-SACs. c LSV curves of Ni-SACs with different diameter in 1 M KOH for evaluating HER activity. d HER overpotential at 10 mA cm⁻² and corresponding TOFs of different Ni-SACs. e LSV curves of Co-SACs with different diameter in 1 M KOH for evaluating OER activity. f OER overpotential at 10 mA cm⁻² and corresponding TOFs of different Co-SACs. Source data are provided as a Source Data file.