Will the production of lithium batteries cause environmental pollution?

Will the production of lithium batteries cause environmental pollution?

Will the production of lithium batteries cause environmental pollution?

1. positive and negative current collectors. Aluminum foil is used for the positive pole, copper foil is used for the negative pole, and some nickel strips may be welded for connection and conduction. These are non-toxic. Now some waste lithium-ion battery recycling units make money by recycling these and steel and aluminum shells. Recyclable and pollution-free.

2. negative electrode material. It is generally graphite, and a few may be lithium titanate or silicon-based materials. Graphite is divided into natural graphite and artificial graphite. Natural graphite comes from graphite ore, and then some processing is carried out. The mining of this natural graphite is still seriously polluted, mainly due to the damage to the respiratory tract.

3. cathode material. At present, the positive electrodes include lithium iron phosphate, lithium manganate, ternary materials, lithium cobalt oxide, and lithium nickel cobalt aluminate. Lithium iron phosphate, generally used as an automobile battery or energy storage battery, is non-toxic. Lithium manganate, electric bicycle battery, non-toxic. Ternary material: nickel cobalt lithium manganate, widely used, in electric bicycles, electronic products, aircraft models, etc. cobalt is toxic.

4. electrolyte. It is composed of organic solvents and lithium salts. The organic solvents generally include PC, EC, Dec, DMC, DME, etc., of which DMC is micro and others are non-toxic. The lithium salt is lithium hexafluorophosphate, which is hydrolyzed to form HF in the presence of water and is toxic.

5. housing. There are several categories: aluminum shell, steel shell, plastic shell, and aluminum plastic film. Aluminum shells and steel shells are non-toxic. Plastic shells and aluminum plastic film are white pollutions.

6. diaphragm. Generally, it is the microporous film of polyolefins, PP, PE, and white pollution.

7. adhesive. At present, styrene-butadiene rubber SBR, polyvinylidene fluoride PVDF, and some acrylic adhesives are commonly used, causing white pollution.

8. solvent. NMP is the main substance used in the process of lithium battery processing. It is used as the solvent of positive and negative electrodes, which evaporates during the manufacturing process. The company should control its emission and recycle them.

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