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. 2023 Nov 15;14:7383. doi: 10.1038/s41467-023-43303-1

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© The Author(s) 2023

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Fig. 1 — a TEM, b STEM, and c corresponding EDX mapping images of L-Cu_xO-HC. d Spherical aberration-corrected high-resolution HAADF-STEM image. e and f are the enlarged area in d. g The line intensity profile acquired along the blue areas in d. h XRD pattern of L-Cu_xO-HC.