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Inhibition Role of Solvation on the Selective Extraction of Co(II): Toward Eco-Friendly Separation of Ni and Co
Yuan, Ling1,2; Wen, Jiawei1,2; Ning, Pengge1,2; Yang, Hailun1,2; Sun, Zhi1; Cao, Hongbin1,2
2022-01-24
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
Volume10Issue:3Pages:1160-1171
AbstractTernary cathodes account for more than half of the market share for lithium-ion battery cathodes, and recycling draws considerable attention. The traditional extraction process used to separate and recover Co and Ni from spent ternary cathode leachates produces a large amount of saline wastewater; thus, a green method is urgently needed. In this work, we underscore the crucial role played by metal solvation during extraction, and this provides a new perspective for achieving green separation. The extraction mechanism can be described as follows: metal cations M2+ (M-Ni and Co) generate stable hydrated ions M(H2O) 6(2+) upon solvation. However, Ni(H2O) 6(2+) and Co(H2O) 6(2+) exhibit different activities in reactions with acidic extractants (HA) and form different complexes, NiA(2)center dot 2H(2)O and CoA(2), respectively. Correspondingly, the coordinated water increases the electron density and steric hindrance of the center metal ions and thus inhibits the subsequent extraction. Therefore, a means of reducing solvation (adding lactic acid) was developed, and this approach exhibited good performance. The separation factor was improved by a factor of 192. These results open a new avenue for high-performance selective extraction of Co, which features a green recovery process and is suitable for future use in industrial production.
Keywordmetal ion species extraction and separation phosphoric acid extractant nickel and cobalt solvation
DOI10.1021/acssuschemeng.1c06307
Language英语
WOS KeywordSYNERGISTIC EXTRACTION ; IONIC LIQUIDS ; SOLVENT-EXTRACTION ; PHOSPHORIC-ACID ; LACTIC-ACID ; RARE-EARTHS ; COMPLEXES ; COBALT ; NICKEL(II) ; BATTERIES
Funding ProjectNational Natural Science Foundation of China[51934006] ; National Natural Science Foundation of China[22008248] ; China Postdoctoral Science Foundation[2020M670459] ; China Postdoctoral Science Foundation[2020T130655]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; China Postdoctoral Science Foundation
WOS IDWOS:000763319300009
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/52285
Collection中国科学院过程工程研究所
Corresponding AuthorNing, Pengge
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yuan, Ling,Wen, Jiawei,Ning, Pengge,et al. Inhibition Role of Solvation on the Selective Extraction of Co(II): Toward Eco-Friendly Separation of Ni and Co[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2022,10(3):1160-1171.
APA Yuan, Ling,Wen, Jiawei,Ning, Pengge,Yang, Hailun,Sun, Zhi,&Cao, Hongbin.(2022).Inhibition Role of Solvation on the Selective Extraction of Co(II): Toward Eco-Friendly Separation of Ni and Co.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,10(3),1160-1171.
MLA Yuan, Ling,et al."Inhibition Role of Solvation on the Selective Extraction of Co(II): Toward Eco-Friendly Separation of Ni and Co".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 10.3(2022):1160-1171.
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