Recovery of metal values from spent lithium-ion batteries with chemical deposition and solvent extraction
Recovery of metal values from spent lithium-ion batteries with chemical deposition and solvent extraction
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DOI：
10.1016/j.jpowsour.2005.03.134
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发表时间：
2005-12-01
影响因子：
9.2
通讯作者：
Zuo, XX
中科院分区：
文献类型：
--
作者：
Nan, JM;Han, DM;Zuo, XX
介绍了一种回收废旧锂离子电池中金属价值的新工艺。废旧电池钢壳拆解后，用碱性溶液浸出电池内部物质，用硫酸溶液溶解残渣。然后大量的钴被化学沉积成草酸盐，Acorga M5640和Cyanex272分别提取少量的铜和钴。锂作为碳酸锂的沉淀物被回收。结果表明，在硫酸盐溶液中，约90%的钴以草酸盐形式沉积，杂质含量小于0.5%；Acorga M5640和Cyanex272对硫酸盐溶液中的铜和钴具有较高的选择性。在该工艺中，铜和钴的回收率分别达到98%和97%以上。此外，还对废液进行了无害化处理，并以回收的钴、锂化合物为前驱体合成了具有良好电化学性能的LiCoO2正极材料。该工艺可实现废LiBS的规模化回收利用。(C)2005 Elsevier B.V.保留所有权利。
This paper describes a new recycling process of metal values from spent lithium-ion batteries (LIBs). After the dismantling of the spent batteries steel crusts, the leaching of battery internal substances with alkaline solution and the dissolving of the residues with H2SO4 solution were carried out. Then mass cobalt was chemically deposited as oxalate, and Acorga M5640 and Cyanex272 extracted the small quantities of copper and cobalt, respectively. Lithium was recovered as deposition of lithium carbonate. It is shown that about 90% cobalt was deposited as oxalate with less than 0.5% impurities, and Acorga M5640 and Cyanex272 were efficient and selective for the extraction of copper and cobalt in sulfate solution. Over 98% of the copper and 97% of the cobalt was recovered in the given process. In addition, the waste solution was treated innocuously, and LiCoO2 positive electrode material with good electrochemical performance was also synthesized by using the recovered compounds of cobalt and lithium as precursors. The process is feasible for the recycling of spent LIBs in scale-up. (c) 2005 Elsevier B.V. All rights reserved.