One-step regeneration and upgrading of spent LiFePO 4 cathodes with phytic acid

The regeneration and upgrading of spent LiFePO cathodes (S-LFP) were achieved 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 Li PO coa...

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Bibliographic Details
Published in:Nanoscale 2024-02, Vol.16 (7), p.3417-3421
Main Authors: Zhu, Xuhui, Ren, Xueqi, Chen, Junting, Gong, Mengqi, Mo, Ran, Luo, Siyuan, Yang, Shun
Format: Article
Language:English
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Summary:The regeneration and upgrading of spent LiFePO cathodes (S-LFP) were achieved 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 Li PO 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.
ISSN:2040-3364
2040-3372
DOI:10.1039/d3nr05387c