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. 2023 Feb 3;14:584. doi: 10.1038/s41467-023-36197-6

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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 Schematic of the degraded and restored crystal structures. b Li/P and Li/Fe molar ratio based on ICP-OES. c Fe 2p XPS spectrum of S-LFP and R-LFP-Li₂DHBN. d XRD spectra of S-LFP and R-LFP-Li₂DHBN. e TG-DTA, f 3D IR map, g IR contour plot of Li₂DHBN based on TG-IR coupling measurements. h Schematic of the regeneration mechanism of S-LFP by using inorganic and organic lithium salts.