The significance of waste lithium battery recycling

Lithium batteries are electronic consumables with a service life of about 3 years. If the scrapped lithium battery is improperly disposed of, the lithium hexafluorophosphate, carbonate organic compounds, and heavy metals such as cobalt and copper will inevitably pose a potential pollution threat to the environment. On the other hand, cobalt, lithium, copper and plastics in waste lithium batteries are valuable resources with extremely high recycling value. Therefore, scientific and effective treatment and disposal of waste lithium batteries not only has significant environmental benefits, but also has good economic benefits.

Lithium battery is mainly composed of shell, positive electrode, negative electrode, electrolyte and separator. The positive electrode is formed by coating lithium cobalt oxide powder on both sides of the aluminum foil current collector through PVDF that acts as a bonding agent; the negative electrode structure is similar to the positive electrode, and is composed of carbon powder bonded to both sides of the copper foil current collector. Based on the structural characteristics of the positive electrode of lithium batteries, a combined process of crushing and screening and air separation was used to conduct separation and enrichment research to achieve efficient separation and recovery of aluminum and black powder from the positive electrode of waste lithium batteries.

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