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나노입자 연구단
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Highly selective lithium recovery from brine using a lambda-MnO2-Ag battery

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Title
Highly selective lithium recovery from brine using a lambda-MnO2-Ag battery
Author(s)
Lee, Jaehan; Seung-Ho Yu; Kim, Choonsoo; Yung Eun Sung; Yoon, Jeyong
Publication Date
2013-05
Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.15, no.20, pp.7690 - 7695
Publisher
ROYAL SOC CHEMISTRY
Abstract
The demand for lithium has greatly increased with the rapid development of rechargeable batteries. Currently, the main lithium resource is brine lakes, but the conventional lithium recovery process is time consuming, inefficient, and environmentally harmful. The batteries have been recently used for lithium recovery, and consist of lithium iron phosphate as a cathode. These batteries feature promising selectivity 10 between lithium and sodium, but they suffer from severe interference from coexisting magnesium ions, an essential component in brine, which has prompted further study. This study reports on a highly selective and energy-efficient lithium recovery system using a rechargeable battery that consists of a λ-MnO2 positive electrode and a chloride-capturing negative electrode. The system can be used to recover lithium from brine even in the presence of magnesium ions as well as other dissolved cations. In addition, lithium 15 recovery from simulated brine is successfully demonstrated, consuming 1.0 Wh per 1 mole of lithium recovery, using water similar to that from the artificial brine, which contains various cations (mole ratio: Na/Li ≈ 15.7, K/Li ≈ 2.2, Mg/Li ≈ 1.9).
URI
https://pr.ibs.re.kr/handle/8788114/1326
ISSN
1463-9076
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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