What are the recycling techniques for lithium batteries?

What are the technical methods for recycling lithium batteries? There are two typical follow-up paths for lithium battery recycling, cascade utilization or direct material recycling. 1. Echelon utilization and raw material recovery Retired power lithium batteries. Those who take the road of echelon utilization are to recycle materials after echelon utilization; for direct material recycling, the batches are too small, there is no history to check, and the safety monitoring is unqualified, etc. . The pursuit of economic benefits is the driving force of company and social behavior. Logically, cascading utilization, until the usable value of lithium batteries is reduced below the maintenance cost, and then raw material recycling, is the maximum value of the battery. But the actual situation is that early power lithium-ion batteries have poor traceability and uneven quality and models. In the early days, the risk of cascading use of batteries was high, and the cost of eliminating risks was high. Therefore, it can be said that in the early stage of power lithium-ion battery recycling, there is a high probability that the recovery of raw materials is the main place for batteries. 2. The method for extracting valuable metals from positive electrode materials. Currently, the recycling of power lithium batteries does not achieve the complete recycling and reuse of various materials on the entire battery. The main types of cathode materials include: lithium cobalt oxide, lithium manganate, ternary lithium, lithium iron phosphate and so on. 3. Hydrometallurgy Hydrometallurgy is a method of selectively dissolving cathode materials in waste lithium batteries with suitable chemical reagents and separating the metal elements in the leachate. The hydrometallurgical process is more suitable for recycling waste lithium batteries with a relatively single chemical composition. It can be used alone or in combination with high temperature metallurgy. It does not require high equipment and has low processing costs. It is a very mature processing method, suitable for small and medium-sized Large-scale recycling of used lithium batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: Why does lithium battery capacity decrease?