Residual electrolyte is the main pollution source in the lithium ion battery disassembly process. A practical detoxified approach is studied using the lithium hexafluorophosphate in the decommissioned power battery with dimethyl carbonate as a solvent. The pH measurement, Fourier transform infrared spectroscopy, micromorphology and phase structure characterization techniques showed that the process in this study is capable of removing lithium hexafluorophosphate from decommissioned power batteries, while controlling the proper ratio of NaOH can also completely precipitate F- into CaF2 crystal and allows recycling of the organic solvents. This process scheme of residual electrolyte treatment effectively reduces environmental pollution during the decommissioned power batteries recycling process, and has the benefit of resource reuse for valuable elements.

中文翻译：

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对电池拆卸过程中残留电解液的无害化处理过程的研究。

残留电解质是锂离子电池拆卸过程中的主要污染源。在退役动力电池中使用六氟磷酸锂，并以碳酸二甲酯为溶剂，研究了一种实用的解毒方法。pH测量，傅立叶变换红外光谱，微观形貌和相结构表征技术表明，该研究方法能够从报废的动力电池中去除六氟磷酸锂，同时控制适当的NaOH比例也可以将F-完全沉淀到CaF2晶体中。允许回收有机溶剂。这种残留电解质处理的工艺方案可有效减少退役动力电池回收过程中的环境污染，