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Direct Reuse of Degraded LiFePO4 Electrodes with LiBH4 as Chemical Lithiation Reagent.

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Title: Direct Reuse of Degraded LiFePO4 Electrodes with LiBH4 as Chemical Lithiation Reagent.
Authors: Li, Feifan1,2 (AUTHOR), Chen, Chen1,2 (AUTHOR), Zheng, Zhen2 (AUTHOR), Li, Lei1,2 (AUTHOR) lilei0323@sjtu.edu.cn
Source: Journal of The Electrochemical Society. 2026, Vol. 173 Issue 9, p1-9. 9p.
Subjects: Lithium borohydride, Electrochemical electrodes, Lithium compounds, Energy storage, Electrodes, Renewable energy industry, Lithium-ion batteries
Abstract: The recycling of spent lithium iron phosphate (S-LFP) batteries is crucial for sustainable energy development. Herein, we report a facile and efficient direct regeneration strategy for S-LFP electrodes via spontaneous chemical lithiation using LiBH4. By simply soaking the S-LFP electrodes in a 0.2 M LiBH4/THF solution at room temperature for 6 min, the Li+ loss is replenished and the crystal structure is effectively restored. The regenerated LFP (R-LFP) electrodes exhibit a high discharge capacity of 141.94 mAh g−1 at 0.5 C and retain over 71% capacity after 500 cycles. This method, operating under mild conditions and avoiding complex steps, shows great potential for industrial application. Highlights: Room-temperature regeneration of spent LiFePO4 electrodes in 6 min using LiBH4. Direct electrode repair without disassembly, high heat, or complex reprocessing. LiBH4 serves as both lithium source and reductant, restoring capacity effectively. Aluminum current collector remains intact, ensuring structural compatibility. Regenerated electrodes show high capacity (141.94 mAh g−1) and long cycle life. [ABSTRACT FROM AUTHOR]
Copyright of Journal of The Electrochemical Society is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 193527399
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Direct Reuse of Degraded LiFePO<subscript>4</subscript> Electrodes with LiBH<subscript>4</subscript> as Chemical Lithiation Reagent.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+The+Electrochemical+Society%22">Journal of The Electrochemical Society</searchLink>. 2026, Vol. 173 Issue 9, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Lithium+borohydride%22">Lithium borohydride</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+electrodes%22">Electrochemical electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium+compounds%22">Lithium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+storage%22">Energy storage</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Renewable+energy+industry%22">Renewable energy industry</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium-ion+batteries%22">Lithium-ion batteries</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The recycling of spent lithium iron phosphate (S-LFP) batteries is crucial for sustainable energy development. Herein, we report a facile and efficient direct regeneration strategy for S-LFP electrodes via spontaneous chemical lithiation using LiBH4. By simply soaking the S-LFP electrodes in a 0.2 M LiBH4/THF solution at room temperature for 6 min, the Li+ loss is replenished and the crystal structure is effectively restored. The regenerated LFP (R-LFP) electrodes exhibit a high discharge capacity of 141.94 mAh g−1 at 0.5 C and retain over 71% capacity after 500 cycles. This method, operating under mild conditions and avoiding complex steps, shows great potential for industrial application. Highlights: Room-temperature regeneration of spent LiFePO4 electrodes in 6 min using LiBH4. Direct electrode repair without disassembly, high heat, or complex reprocessing. LiBH4 serves as both lithium source and reductant, restoring capacity effectively. Aluminum current collector remains intact, ensuring structural compatibility. Regenerated electrodes show high capacity (141.94 mAh g−1) and long cycle life. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of The Electrochemical Society is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1149/1945-7111/ae6401
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      – Code: eng
        Text: English
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        PageCount: 9
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      – SubjectFull: Lithium borohydride
        Type: general
      – SubjectFull: Electrochemical electrodes
        Type: general
      – SubjectFull: Lithium compounds
        Type: general
      – SubjectFull: Energy storage
        Type: general
      – SubjectFull: Electrodes
        Type: general
      – SubjectFull: Renewable energy industry
        Type: general
      – SubjectFull: Lithium-ion batteries
        Type: general
    Titles:
      – TitleFull: Direct Reuse of Degraded LiFePO4 Electrodes with LiBH4 as Chemical Lithiation Reagent.
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            NameFull: Li, Feifan
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            NameFull: Chen, Chen
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            NameFull: Zheng, Zhen
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            NameFull: Li, Lei
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            – D: 14
              M: 05
              Text: 2026
              Type: published
              Y: 2026
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