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Waste Manag Res ; 38(11): 1295-1300, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-32308154

RESUMEN

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.


Asunto(s)
Suministros de Energía Eléctrica , Litio , Electrólitos , Reciclaje , Solventes
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