What is the lithium battery recycling method?

Release time:

2022-07-13 10:23

Lithium battery is mainly composed of shell, positive electrode, negative electrode, electrolyte and diaphragm. Since the commercialization of lithium battery, it has rapidly occupied the power market of portable electronic and electrical equipment. The output has increased year by year, and the service life is about 2 years. However, if the lithium battery is not recycled properly, the carbonate, cobalt, copper and other heavy metals contained in it will inevitably pose a potential pollution threat to the environment.

The positive electrode of the lithium battery is formed by coating lithium cobalt oxide powder on both sides of the aluminum foil collector with PVDF, and the structure of the negative electrode is similar to that of the positive electrode, which is composed of carbon powder bonded on both sides of the copper foil collector. Lithium-ion batteries have the advantages of high voltage, large specific capacity, long service life, and no memory effect. On the other hand, cobalt, lithium, copper and plastics in lithium batteries are valuable resources with high recycling value. Therefore, scientific and effective recycling of waste lithium batteries not only has significant environmental benefits, but also has good economic benefits.

Recycling method of lithium battery pack

Lithium battery packs can be used in different ways according to the degree of waste. Lithium battery packs with high degree of waste should be recycled and disassembled to collect available materials and put them into production. Low waste level can be used according to echelon, put into use in areas with low energy demand, and reused according to energy echelon.

At present, the research on the recycling of waste lithium batteries mainly focuses on the recovery of cobalt and lithium. Cobalt and lithium are high-value cathode precious metals. There are few reports on the separation and recovery of cathode materials. In order to alleviate the increasingly serious shortage of resources and environmental pollution caused by rapid economic development, it has become a global consensus to realize the full component recovery of waste.

The lithium ion battery is composed of positive and negative electrodes, binder, electrolyte and separator. In industry, manufacturers use lithium manganate, nickel cobalt lithium manganate ternary materials, lithium cobalt oxide and lithium iron phosphate as positive and negative electrode materials for lithium ion batteries. Due to the lack of nickel, cobalt and lithium resources, the recycling of waste lithium-ion batteries and their production waste is more obvious.

At the same time, we should also pay attention to the following points when recycling lithium batteries:

After all, lithium batteries have potential safety hazards, such as combustion or explosion. Therefore, we should pay attention to avoid high temperature and water after recycling and storage, which will also affect the profit you can resell later. Especially in the case of large number and concentration, special attention should be paid to fire safety.

The recovery value of the ternary lithium battery is higher, while the recovery value of the old phosphoric acid battery is lower. In this case, the storage should be classified.

3. Disassembly is also a technical work. If we are not professionals and only come to earn the intermediate price difference for recycling, please do not disassemble the lithium battery without authorization. In addition, if you want to disassemble, we also need professional equipment and professional knowledge. If you have both, remember to discharge before disassembly, otherwise it is easy to burn or even explode due to short circuit or circuit problems.

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