CAS OpenIR
In situ reduction of cathode material by organics and anode graphite without additive to recycle spent electric vehicle LiMn2O4 batteries
Tao, Ren1,2; Xing, Peng1; Li, Huiquan1,2; Cun, Zhigen1,2; Sun, Zhenhua1; Wu, Yufeng3,4
2022-02-01
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume520Pages:9
AbstractIn a conventional roasting-sorting process to obtain cathode powders, the phase structure of LiMn2O4 is not dissociated and the valence of manganese is not changed, resulting in low metal recovery efficiency and high reagent cost in the subsequent leaching process. In this context, a novel process is developed to realize the recovery of spent LiMn2O4 lithium-ion batteries (LIBs) via one-step pyrolysis and reductant-free acid leaching. The leaching efficiencies of lithium and manganese are respectively 99.9% and 99.4% under the optimal pyrolysis conditions: a temperature of 500 degrees C, a nitrogen flow rate of 50 mL/min, and a pyrolysis time of 60 min. The analysis of thermogravimetry-infrared spectroscopy indicates volatilization of electrolyte and decomposition of LiPF6 occur in the temperature range of 100-180 degrees C. When the temperature rises from 180 to 800 degrees C, high molecular weight polymers (binder and separator) are degraded into pyrolytic gas and oil. LiMn2O4 is deconstructed and reduced to MnO and Li2CO3 under the synergistic effect of pyrolytic gas and anode graphite. The harmful fluorine and phosphorus are absorbed by Ca(OH)2 solution to avoid environmental hazards. The results suggest that the process integrated pyrolysis and aicd leaching is efficient, environmental-friendly, and low-cost for recycling spent LiMn2O4 LIBs.
KeywordSpentLiMn(2)O(4) lithium-ion battery Pyrolysis Dissociation In-situ reduction Recovery
DOI10.1016/j.jpowsour.2021.230827
Language英语
WOS KeywordLITHIUM-ION BATTERIES ; VALUABLE METALS ; EFFICIENT PROCESS ; FT-IR ; RECOVERY ; MANGANESE ; LI ; SEPARATION ; PYROLYSIS ; SCRAP
Funding ProjectNational Key Research and Development Program of China[2018YFC1901802] ; Chinese Academy of Sciences Key Deployment Projects[ZDRW_CN_2020-1] ; Chinese Academy of Sciences Key Deployment Projects[ZDRW-ZS-2018-1] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A15]
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationNational Key Research and Development Program of China ; Chinese Academy of Sciences Key Deployment Projects ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences
WOS IDWOS:000742857400004
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/51738
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Huiquan; Wu, Yufeng
Affiliation1.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
4.Beijing Univ Technol, Inst Circular Econ, Beijing 100124, Peoples R China
Recommended Citation
GB/T 7714
Tao, Ren,Xing, Peng,Li, Huiquan,et al. In situ reduction of cathode material by organics and anode graphite without additive to recycle spent electric vehicle LiMn2O4 batteries[J]. JOURNAL OF POWER SOURCES,2022,520:9.
APA Tao, Ren,Xing, Peng,Li, Huiquan,Cun, Zhigen,Sun, Zhenhua,&Wu, Yufeng.(2022).In situ reduction of cathode material by organics and anode graphite without additive to recycle spent electric vehicle LiMn2O4 batteries.JOURNAL OF POWER SOURCES,520,9.
MLA Tao, Ren,et al."In situ reduction of cathode material by organics and anode graphite without additive to recycle spent electric vehicle LiMn2O4 batteries".JOURNAL OF POWER SOURCES 520(2022):9.
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