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AuthorElmakki T., Zavahir S., Hafsa U., Al-Sulaiti L., Ahmad Z., Chen Y., Park H., Shon H.K., Ho Y.-C., Han D.S.
Available date2023-10-09T07:34:20Z
Publication Date2023
Publication NameNanomaterials
ResourceScopus
URIhttp://dx.doi.org/10.3390/nano13050895
URIhttp://hdl.handle.net/10576/48347
AbstractIn this study, α-LiAlO2 was investigated for the first time as a Li-capturing positive electrode material to recover Li from aqueous Li resources. The material was synthesized using hydrothermal synthesis and air annealing, which is a low-cost and low-energy fabrication process. The physical characterization showed that the material formed an α-LiAlO2 phase, and electrochemical activation revealed the presence of AlO2* as a Li deficient form that can intercalate Li+. The AlO2*/activated carbon electrode pair showed selective capture of Li+ ions when the concentrations were between 100 mM and 25 mM. In mono salt solution comprising 25 mM LiCl, the adsorption capacity was 8.25 mg g−1, and the energy consumption was 27.98 Wh mol Li−1. The system can also handle complex solutions such as first-pass seawater reverse osmosis brine, which has a slightly higher concentration of Li than seawater at 0.34 ppm. © 2023 by the authors.
SponsorThis study is made possible by Qatar National Research Fund (QNRF) under National Priorities Research Program (NPRP) grant (#NPRP12S-0227-190166) and Graduate Student Research Award (GSRA) grant (#GSRA8-L-2-0411-21011).
Languageen
PublisherMDPI
Subjectactivated carbon
electrochemical ion pumping
lithium recovery
α-LiAlO2
TitleNovel LiAlO2 Material for Scalable and Facile Lithium Recovery Using Electrochemical Ion Pumping
TypeArticle
Issue Number5
Volume Number13
dc.accessType Open Access


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