View in EDS

Cost-efficient closed-loop recovery and regeneration of LiFePO4 cathodes via a sodium persulfate-assisted route.

Saved in:
Bibliographic Details
Title: Cost-efficient closed-loop recovery and regeneration of LiFePO4 cathodes via a sodium persulfate-assisted route.
Authors: Dong, Yizhou1 (AUTHOR), Zhao, Tianshuo1 (AUTHOR), Zhang, Xinlong1 (AUTHOR), Qin, Yonghong1 (AUTHOR), Cheng, Ruiqi1,2 (AUTHOR) ruiqi.cheng@polyu.edu.hk, Fu, Chaopeng1 (AUTHOR) chengchaopengfu@sjtu.edu.cn
Source: Colloids & Surfaces A: Physicochemical & Engineering Aspects. Oct2026, Vol. 747, pN.PAG-N.PAG. 1p.
Subjects: Waste recycling, Persulfates, Leaching, Economic efficiency, Electrochemical experiments
Abstract: The sustainable recycling of spent LiFePO 4 (LFP) cathodes is hindered by the trade-off between efficient element separation and cost-effective closed-loop regeneration. Herein, we present an integrated approach combining the optimized acid leaching with sodium persulfate (Na 2 S 2 O 8)-assisted oxidative precipitation, aiming to overcome this limitation. An orthogonal experimental design establishes the optimal leaching conditions (The spent LFP:H 3 PO 4 :H 2 SO 4 =1:0.62:0.57, 60 °C, liquid/solid ratio of 6:1), achieving high recovery efficiencies of 98.97% for Li and 99.23% for Fe. Remarkably, this strategically optimized integrated process reduces processing costs to only 60% of conventional pyrometallurgical routes and 88% of typical hydrometallurgical routes, while the regenerated LFP exhibits high crystallinity, uniform morphology, and a well-recovered olivine structure. When assembled in Li-ion batteries, R-LFP delivers a discharge capacity of 139.2 mAh g−1 at 1 C and retains 95.2% of its capacity after 300 cycles at 5 C, outperforming spent LFP and rivaling the best-reported regeneration methods. By simultaneously integrating high recovery efficiency, low processing cost, and outstanding electrochemical performance, this work provides a practical, sustainable, and industrially viable closed-loop recycling strategy for spent LFP cathodes that is well-suited for large-scale application. [Display omitted] • A closed-loop route for spent LiFePO 4 recycling with 98.97% Li and 99.23% Fe recovery. • Sodium persulfate-assisted process enables efficient FePO 4 regeneration and separation. • Regenerated LiFePO 4 delivers 139.2 mAh g−1 at 1 C and 95.2% retention after 300 cycles at 5 C. • The process achieves 557.6 USD t−1 profit with lower cost and environmental impact. [ABSTRACT FROM AUTHOR]
Copyright of Colloids & Surfaces A: Physicochemical & Engineering Aspects is the property of Elsevier B.V. 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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 195249113
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Cost-efficient closed-loop recovery and regeneration of LiFePO4 cathodes via a sodium persulfate-assisted route.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Dong%2C+Yizhou%22">Dong, Yizhou</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Tianshuo%22">Zhao, Tianshuo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xinlong%22">Zhang, Xinlong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qin%2C+Yonghong%22">Qin, Yonghong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Ruiqi%22">Cheng, Ruiqi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> ruiqi.cheng@polyu.edu.hk</i><br /><searchLink fieldCode="AR" term="%22Fu%2C+Chaopeng%22">Fu, Chaopeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chengchaopengfu@sjtu.edu.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Colloids+%26+Surfaces+A%3A+Physicochemical+%26+Engineering+Aspects%22">Colloids & Surfaces A: Physicochemical & Engineering Aspects</searchLink>. Oct2026, Vol. 747, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Waste+recycling%22">Waste recycling</searchLink><br /><searchLink fieldCode="DE" term="%22Persulfates%22">Persulfates</searchLink><br /><searchLink fieldCode="DE" term="%22Leaching%22">Leaching</searchLink><br /><searchLink fieldCode="DE" term="%22Economic+efficiency%22">Economic efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+experiments%22">Electrochemical experiments</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The sustainable recycling of spent LiFePO 4 (LFP) cathodes is hindered by the trade-off between efficient element separation and cost-effective closed-loop regeneration. Herein, we present an integrated approach combining the optimized acid leaching with sodium persulfate (Na 2 S 2 O 8)-assisted oxidative precipitation, aiming to overcome this limitation. An orthogonal experimental design establishes the optimal leaching conditions (The spent LFP:H 3 PO 4 :H 2 SO 4 =1:0.62:0.57, 60 °C, liquid/solid ratio of 6:1), achieving high recovery efficiencies of 98.97% for Li and 99.23% for Fe. Remarkably, this strategically optimized integrated process reduces processing costs to only 60% of conventional pyrometallurgical routes and 88% of typical hydrometallurgical routes, while the regenerated LFP exhibits high crystallinity, uniform morphology, and a well-recovered olivine structure. When assembled in Li-ion batteries, R-LFP delivers a discharge capacity of 139.2 mAh g−1 at 1 C and retains 95.2% of its capacity after 300 cycles at 5 C, outperforming spent LFP and rivaling the best-reported regeneration methods. By simultaneously integrating high recovery efficiency, low processing cost, and outstanding electrochemical performance, this work provides a practical, sustainable, and industrially viable closed-loop recycling strategy for spent LFP cathodes that is well-suited for large-scale application. [Display omitted] • A closed-loop route for spent LiFePO 4 recycling with 98.97% Li and 99.23% Fe recovery. • Sodium persulfate-assisted process enables efficient FePO 4 regeneration and separation. • Regenerated LiFePO 4 delivers 139.2 mAh g−1 at 1 C and 95.2% retention after 300 cycles at 5 C. • The process achieves 557.6 USD t−1 profit with lower cost and environmental impact. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Colloids & Surfaces A: Physicochemical & Engineering Aspects is the property of Elsevier B.V. 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=195249113
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.colsurfa.2026.140986
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Waste recycling
        Type: general
      – SubjectFull: Persulfates
        Type: general
      – SubjectFull: Leaching
        Type: general
      – SubjectFull: Economic efficiency
        Type: general
      – SubjectFull: Electrochemical experiments
        Type: general
    Titles:
      – TitleFull: Cost-efficient closed-loop recovery and regeneration of LiFePO4 cathodes via a sodium persulfate-assisted route.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Dong, Yizhou
      – PersonEntity:
          Name:
            NameFull: Zhao, Tianshuo
      – PersonEntity:
          Name:
            NameFull: Zhang, Xinlong
      – PersonEntity:
          Name:
            NameFull: Qin, Yonghong
      – PersonEntity:
          Name:
            NameFull: Cheng, Ruiqi
      – PersonEntity:
          Name:
            NameFull: Fu, Chaopeng
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 20
              M: 10
              Text: Oct2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 09277757
          Numbering:
            – Type: volume
              Value: 747
          Titles:
            – TitleFull: Colloids & Surfaces A: Physicochemical & Engineering Aspects
              Type: main
ResultId 1