卤水
电化学
阳极
电极
磷酸钒锂电池
电化学电池
膜
无机化学
锂(药物)
阴极
氧化还原
卤化物
化学
材料科学
生物化学
有机化学
物理化学
医学
内分泌学
作者
Zhen Li,I-Chun Chen,Li Cao,Xiaowei Liu,Kuo‐Wei Huang,Zhiping Lai
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2024-09-26
卷期号:385 (6716): 1438-1444
被引量:1
标识
DOI:10.1126/science.adg8487
摘要
The sustainability of lithium-based energy storage or conversion systems, e.g., lithium-ion batteries, can be enhanced by establishing methods of efficient lithium extraction from harsh brines. In this work, we describe a decoupled membrane-free electrochemical cell that cycles lithium ions between iron-phosphate electrodes and features cathode (brine) and anode (fresh water) compartments that are isolated from each other yet electrochemically connected through a pair of silver/silver-halide redox electrodes. This design is compatible with harsh brines having magnesium/lithium molar ratios of up to 3258 and lithium concentrations down to 0.15 millimolar, enabling the production of battery-grade (>99.95% pure) lithium carbonate. Energy savings of up to ~21.5% were realized by efficiently harvesting the osmotic energy of the brines. A pilot-scale cell with an electrode surface area of 33.75 square meters was used to realize lithium extraction from Dead Sea brine with a recovery rate of 84.0%.
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