Battery system for recovering lithium from salt water

lithium recovery;battery system;LiMn2O4;lithium ion selectivity;660

공과대학 화학생물공학부(에너지환경 화학융합기술전공) ;

University:서울대학교 대학원

关键词: lithium recovery;    battery system;    LiMn2O4;    lithium ion selectivity;    660;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/129464/1/000000009819.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

however, this method is time consuming, inefficient and environmentally harmful. Therefore, new technology for highly selective and environmentally friendly lithium recovery from brine water is urgently required. This research investigates the battery system to extract lithium from salt water, which is containing various cations, using Li1-xMn2O4 positive electrode and Ag/AgCl negative electrode. The performance of the battery system showed highly selective and efficient for lithium recovering from salt water which has same concentration of lithium, sodium, potassium, magnesium, and calcium ions (30 mM). And we demonstrated this battery system for recovering lithium from artificial brine water that the compound of chemical is similar with Salar de Atacama (mole ratio: Na/Li ≈ 15.7, K/Li ≈ 2.2, Mg/Li ≈ 1.9) which is brine lake located in Chile. By repeating the battery system, we can condense high purity of LiCl solution from the brine water as consuming 1.0 Wh per 1 mole of lithium recovery.