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http://dx.doi.org/10.5762/KAIS.2011.12.10.4660

Synthesis of Li1.6[MnM]1.6O4 (M=Cu, Ni, Co, Fe) and Their Physicochemical Properties as a New Precursor for Lithium Adsorbent  

Kim, Yang-Soo (Korea Basic Science Institute)
Moon, Won-Jin (Korea Basic Science Institute)
Jeong, Soon-Ki (Dept. of Chemical Engineering,Soonchunhyang University)
Won, Dae-Hee (Hub Univ. for industrial collaboration, Sooncheon University)
Lee, Sang-Ro (KFNET. Co. LTD.)
Kim, Byoung-Gyu (Korea Institute of Geoscience and Mineral Resources)
Chung, Kang-Sup (Korea Institute of Geoscience and Mineral Resources)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.10, 2011 , pp. 4660-4665 More about this Journal
Abstract
New precursors as a Li adsorbent, $Li_{1.6}(MnM)_{1.6}O_4$ (M=Cu, Ni, Co, Fe), were synthesized by hydrothermal method and their physicochemical properties were discussed. XRD and HRTEM results revealed that the original spinel structure was stabilized by cobalt-doping while Cu-, Ni- and Fe-doping led to structural changes. Such a structural stabilization by Cobalt-doping was maintained after lithium leaching by acid treatment. Li absorption efficiency from seawater was significantly enhanced by using the Cobalt-doped spinel manganese oxide, $Li_{1.6}[MnCo]_{1.6}O_4$, compared to the commercially available $Li_{1.33}Mn_{1.67}O_4$; the adsorbed amount of Li from 1g-adsorbent was 35 and 16 mg by $Li_{1.6}[MnCo]_{1.6}O_4$, and $Li_{1.33}Mn_{1.67}O_4$, respectively.
Keywords
Li-adsorbent; Spinel-type managanese oxide; Co-dopant; Li absorption efficiency;
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