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Resynthesizing of lithium cobalt oxide from spent lithium-ion batteries using an environmentally benign and economically viable recycling process
Hydrometallurgy ( IF 4.7 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.hydromet.2020.105430
Sandeep Anwani , Ravi Methekar , Venkatasailanathan Ramadesigan

Abstract An environmentally benign and economically viable recycling process for spent lithium-ion batteries was developed. Seven acid recycling processes from strong and weak acid groups were compared using the parameters like product purity, overall process efficiency, environmental and economical indices. Using these indices, the recycling processes were compared using filter-based technique and validated with maximum area coverage methods. The experimental data for these indices were found out by various characterization techniques like SEM, XRD, FTIR, ICP-OES and life cycle assessment approach along with extraction efficiencies of the processes. Oxalic acid-based recycling process was found to be the most environmentally benign and economically viable process among the chosen recycling processes. Lithium cobalt oxide was resynthesized using the material extracted from spent lithium-ion batteries using oxalic acid-based recycling process. We obtain a purity of 90.13% of lithium cobalt oxide, thereby making it feasible for battery fabrication.

中文翻译:

使用环境友好且经济可行的回收工艺从废锂离子电池中重新合成钴酸锂

摘要 开发了一种环保且经济可行的废锂离子电池回收工艺。使用产品纯度、整体工艺效率、环境和经济指标等参数对强酸和弱酸组的七种酸回收工艺进行了比较。使用这些指标,使用基于过滤器的技术比较回收过程,并使用最大面积覆盖方法进行验证。这些指标的实验数据是通过各种表征技术,如 SEM、XRD、FTIR、ICP-OES 和生命周期评估方法以及过程的提取效率得出的。在所选择的回收工艺中,基于草酸的回收工艺被认为是对环境最友好、经济上最可行的工艺。使用基于草酸的回收过程从废锂离子电池中提取的材料重新合成锂钴氧化物。我们获得了纯度为 90.13% 的钴酸锂,从而使其可用于电池制造。
更新日期:2020-11-01
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