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. 2023 Mar 4;14:1248. doi: 10.1038/s41467-023-36833-1

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© The Author(s) 2023

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a SEM image showing the uniform distribution of the IrO₂NR. b TEM image of a single IrO₂NR. The insert is the enlargement of the tail end of the ribbon with a width of 7.9 mm. c XRD pattern. d HRTEM image. e Line scan of the HRTEM image indicated by the (100) and (010) planes. f HAADF–STEM image for the IrO₂NR. g XANES spectra and h FT–EXAFS spectra for the IrO₂NR, C-IrO₂ and Ir foil. i A typical long IrO₂NR with a length of 22.53 μm. j, k Pictorial illustration of the crystal structure for the IrO₂NR from the (j) a direction and (k) c direction.