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Selective recovery of Li and FePO4 from spent LiFePO4 cathode scraps by organic acids and the properties of the regenerated LiFePO4
Kumar, Jai1,2; Shen, Xing1,2; Li, Bo1; Liu, Huizhou1,2; Zhao, Junmei1,3
2020-07-15
Source PublicationWASTE MANAGEMENT
ISSN0956-053X
Volume113Pages:32-40
AbstractTo recycle the sharply growing spent lithium-ion batteries and alleviate concerns over shortages of resources, particularly Li, is still an urgent issue. In this work, an organic acids based leaching approach at room temperature is proposed to recover Li and FePO4 from spent LiFePO4 cathode powder. The coexistent metal ions, Cu and Al, have also been investigated. Citrus fruit juices, rich in organic acids, such as citric acid and malic acid, have been used as leaching agents in this work. Among lemon, orange and apple, lemon juice shows the best leaching effect based on its suitable pH of the reaction system. Under the optimized conditions, the leaching rates of Li, Cu and Al can reach up to 94.83%, 96.92% and 47.24%, while Fe and P remain as low as 4.05% and 0.84%, respectively. Li2CO3 and FePO4 can be recovered from the leachate and the leaching residue, respectively. The recovered FePO4 was used to prepare new cathode material LiFePO4. The crystalline carbon, present in the spent LiFePO4 cathode scraps, has a significant effect on the electrochemical performances of the regenerated LiFePO4. The regenerated LiFePO4 cathode material delivered a comparable discharge capacity of 155.3 mAh g(-1) at 0.1C and rate capacity to the fresh LiFePO4. For the cycling stability, it displays capacity retention of 98.30% over 100 cycles at 1 C with a fading rate of 0.017% per cycle. The proposed organic acids-based recycling strategy is much benign for recycling the spent LiFePO4 cathode materials. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordSpent LiFePO4 cathode Organic acids Li-leaching Lemon juice Regeneration of LiFePO4
DOI10.1016/j.wasman.2020.05.046
Language英语
WOS KeywordIRON PHOSPHATE BATTERIES ; LITHIUM-ION BATTERIES ; FACILE METHOD ; GREEN ; PERFORMANCE ; METALS ; LEMON
Funding ProjectNational Natural Science Foundation of China[51872289] ; National Natural Science Foundation of China[51672275] ; Beijing Natural Science Foundation[2182074]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China ; Beijing Natural Science Foundation
WOS IDWOS:000546944400002
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41288
Collection中国科学院过程工程研究所
Corresponding AuthorZhao, Junmei
Affiliation1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc Engn, State Key Lab Biochem Engn, 1 BeiErTiao, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Kumar, Jai,Shen, Xing,Li, Bo,et al. Selective recovery of Li and FePO4 from spent LiFePO4 cathode scraps by organic acids and the properties of the regenerated LiFePO4[J]. WASTE MANAGEMENT,2020,113:32-40.
APA Kumar, Jai,Shen, Xing,Li, Bo,Liu, Huizhou,&Zhao, Junmei.(2020).Selective recovery of Li and FePO4 from spent LiFePO4 cathode scraps by organic acids and the properties of the regenerated LiFePO4.WASTE MANAGEMENT,113,32-40.
MLA Kumar, Jai,et al."Selective recovery of Li and FePO4 from spent LiFePO4 cathode scraps by organic acids and the properties of the regenerated LiFePO4".WASTE MANAGEMENT 113(2020):32-40.
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