期刊
HYDROMETALLURGY
卷 146, 期 -, 页码 24-28出版社
ELSEVIER
DOI: 10.1016/j.hydromet.2014.03.010
关键词
Lithium extraction; LiFePO4/FePO4 electrode; Brine; Electrochemical behaviour
LiFePO4/FePO4 electrodes are used to extract Li from brine. The root cause of the negative influences of Na+ on the intercalation/deintercalation of Li+ is found by means of electrochemical analysis. The side-effect of Na+ on the extraction of Li can be eliminated by controlling the electrolytic voltage to less than 03 V, and the electrode exhibits excellent cycle performance under this condition. When the electrolytic voltage is 0.25 V. the concentration of Li+ in solution reaches 432 mg.L(-1)after 10 electrolytic cydes, and the average Li+ capacity of the electrode reaches 38.6 mg.g(-1) LiFePO4. (c) 2014 Elsevier B.V. All rights reserved.
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