One-step regeneration and upgrading of spent LiFePO4 cathodes with phytic acid

Xuhui Zhu; Xueqi Ren; Junting Chen; Mengqi Gong; Ran Mo; Siyuan Luo; Shun Yang

doi:10.1039/D3NR05387C

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One-step regeneration and upgrading of spent LiFePO₄ cathodes with phytic acid†

Xuhui Zhu,^a Xueqi Ren,^a Junting Chen,^a Mengqi Gong,^a Ran Mo,^a Siyuan Luo^a and Shun Yang

*^a

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* Corresponding authors

^a School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, China
E-mail: yangshun@jsnu.edu.cn

Abstract

The regeneration and upgrading of spent LiFePO₄ cathodes (S-LFP) were achieved via a one-step hydrothermal treatment. The reducing effect of phytic acid could restore the degraded structure associated with an aqueous Li source. Meanwhile, Li ions are easily chelated by phytic acid groups, and a Li₃PO₄ coating layer could be formed to reconstruct the surface of the LFP. The regenerated LFP exhibits faster reaction kinetics, larger high-rate charge/discharge capacity, and better cycling performance than commercial LFPs, suggesting that our proposed strategy is a promising technology for the recovery of spent cathode materials.

This article is part of the themed collection: Nanoscale 2024 Emerging Investigators

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Article information

DOI: https://doi.org/10.1039/D3NR05387C
Article type: Communication
Submitted: 25 Oct 2023
Accepted: 02 Jan 2024
First published: 03 Jan 2024

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Nanoscale, 2024,16, 3417-3421

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One-step regeneration and upgrading of spent LiFePO₄ cathodes with phytic acid

X. Zhu, X. Ren, J. Chen, M. Gong, R. Mo, S. Luo and S. Yang, Nanoscale, 2024, 16, 3417 DOI: 10.1039/D3NR05387C

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