The shift to electric mobility necessitates recycling the metals from lithium ion battery waste. Ion exchange was studied for use in the removal of impurities from synthetic lithium ion battery waste leachate in laboratory-scale batch and column experiments. Aminomethylphosphonic acid functional chelating resin (Lewatit TP260) was capable of removing Fe, Al, Mn, and Cu from the leachate, while leaving valuable Co, Ni, and Li as a pure mixture in the raffinate. Increasing the pH up to 3 and the temperature to 60 °C improved the purity and productivity. Iron and aluminium could not be eluted efficiently by mineral acids, but an oxalate solution was found feasible. A two-step elution procedure, in which Cu and Mn are first removed with sulfuric acid, followed by Fe and Al removal with potassium oxalate, was successfully demonstrated. The suggested process produced a > 99.6% pure Li + Co + Ni solution (battery grade), along with a Mn and Cu rich sulfuric acid solution with Co as an impurity and an oxalate solution of Fe + Al as by-products. The productivities for these solutions were 0.39, 0.16, and 0.38 BV/h, respectively. The Co loss was very low (1.1%) as compared to previously suggested impurity removal processes using precipitation and solvent extraction. Moreover, Co can be easily recycled back to the ion exchange column feed after Mn and Cu are recovered as pure by-products.

向电动汽车的转变需要从锂离子电池废料中回收金属。在实验室规模的分批和色谱柱实验中，研究了离子交换技术用于从合成锂离子电池废渗滤液中去除杂质的方法。氨基甲基膦酸功能性螯合树脂（Lewatit TP260）能够从渗滤液中去除Fe，Al，Mn和Cu，同时在提余液中保留纯混合物形式的有价值的Co，Ni和Li。将pH值提高到3，将温度提高到60°C，可以提高纯度和生产率。铁和铝不能被无机酸有效洗脱，但是发现草酸盐溶液是可行的。成功地证明了两步洗脱程序，其中首先用硫酸除去Cu和Mn，然后用草酸钾除去Fe和Al。所建议的过程产生了纯度> 99.6％的纯Li + Co + Ni溶液（电池级），以及富含Mn和Cu的硫酸溶液，其中Co作为杂质，Fe + Al的草酸盐溶液作为副产物。这些溶液的生产率分别为0.39、0.16和0.38 BV / h。与先前建议的使用沉淀和溶剂萃取的杂质去除工艺相比，Co损耗非常低（1.1％）。而且，在以纯副产品形式回收Mn和Cu之后，Co可以很容易地循环回到离子交换塔原料中。与先前建议的使用沉淀和溶剂萃取的杂质去除工艺相比，Co损耗非常低（1.1％）。而且，在以纯副产品形式回收Mn和Cu之后，Co可以很容易地循环回到离子交换塔原料中。与先前建议的使用沉淀和溶剂萃取的杂质去除工艺相比，Co损耗非常低（1.1％）。而且，在以纯副产品形式回收Mn和Cu之后，Co可以很容易地循环回到离子交换塔原料中。