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AuthorYuan, Ziwen
AuthorYu, Yanxi
AuthorWei, Li
AuthorWang, Cheng
AuthorZhong, Xia
AuthorSui, Xiao
AuthorYu, Zixun
AuthorHan, Dong Suk
AuthorShon, Hokyong
AuthorChen, Yuan
Available date2022-12-19T08:05:10Z
Publication Date2021-01-26
Publication NameACS Applied Materials and Interfaces
Identifierhttp://dx.doi.org/10.1021/acsami.0c20464
CitationYuan, Z., Yu, Y., Wei, L., Wang, C., Zhong, X., Sui, X., ... & Chen, Y. (2021). Thermo-osmosis-coupled thermally regenerative electrochemical cycle for efficient lithium extraction. ACS Applied Materials & Interfaces, 13(5), 6276-6285.
ISSN1944-8244
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85100657472&origin=inward
URIhttp://hdl.handle.net/10576/37388
AbstractLithium (Li) production based on the soda evaporation process is time-consuming and unsustainable. The emerging electrochemical Li extraction is time-efficient but requires high-concentration Li sources and significant electrical energy input. Here, we demonstrate a fast, energy-saving, and environment-friendly Li production process by coupling a thermally regenerative electrochemical cycle (TREC) using lithium manganese oxide (LMO) and nickel hexacyanoferrate (NiHCF) electrodes with poly(vinylidene fluoride) membrane-based thermo-osmosis (denoted as TO-TREC). The characterization of LMO and NiHCF electrodes confirmed that the relatively high temperature of TO-TREC has negligible adverse effects on the ion intercalation in LMO and NiHCF electrodes. The LMO/NiHCF pair has a positive temperature coefficient of 0.843 mV K-1. In the TO-TREC process, Li ions are selectively extracted from a Li-containing brine warmed by low-grade heat and then released into a room-temperature recovery solution such as LiCl with a production rate of 50-60 mmol Li+ m-2 h-1. Li source solutions are concentrated by thermo-osmosis simultaneously, making it possible to utilize previously unusable Li-containing sources, such as concentrated brines from desalination plants and industrial effluents. Besides, the TREC harvests thermal energy from the heated brine, saving >20% of electrical energy compared to conventional electrochemical methods. The new process shows the potential to meet the growing global Li demands for many applications.
Sponsor- Qatar National Research Fund (QNRF) - grant #NPRP12S-0227-1901660. - Australian Research Council (ARC) - grant #FT160100107.
Languageen
PublisherAmerican Chemical Society
Subjectlithium extraction
lithium manganese oxide
nickel hexacyanoferrate
thermal energy harvesting
thermally regenerative electrochemical cycle
thermo-osmosis
TitleThermo-osmosis-Coupled Thermally Regenerative Electrochemical Cycle for Efficient Lithium Extraction
TypeArticle
Pagination6276-6285
Issue Number5
Volume Number13
ESSN1944-8252
dc.accessType Abstract Only


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