What are the hazards of lithium battery processing to the environment

Lithium battery processing requires lithium cobalt oxide, copper, aluminum, nickel, etc., so if it is discarded casually, it may still have a certain impact on the environment. In addition, there is the electrolyte used in lithium batteries. The main components are dimethyl sulfate (DMC), diethyl carbonate (DEC), and ethylene carbonate (EC). Some organic waste gas volatilizes during processing. There are many types of lithium batteries. Because lithium cobalt oxide batteries contain cobalt, which is a heavy metal, it has a certain impact on the environment. Lithium manganate and lithium iron batteries have little impact on the environment, but the electrolyte has an impact on the environment. In addition, during processing, other places where lithium battery processing equipment is used will inevitably affect environmental products. At present, there is no absolutely pollution-free, pure green processing company. The industry believes that although the lithium battery technology and processing technology are quite mature, some lithium battery cell companies ignore the dust removal, dehumidification and purification of the processing environment, resulting in fatal defects in the quality of lithium battery products. Processing environment control is the key to ensuring the quality of lithium batteries. The pollution threat of lithium-powered lithium-ion batteries lies in the back-end solution after it is scrapped. If it is improperly recycled and disposed of, it is also very likely to repeat the mistakes of lead-acid batteries in the past and cause serious pollution to the environment. According to various sources, although lithium batteries do not contain heavy metals such as lead and cadmium, which are widely criticized, in terms of technology, in addition to lithium, their electrolyte still contains heavy metals such as nickel, cobalt, and manganese. The electrolyte contains fluorine. Organic matter also has pollution. Look at the pollution problem of lithium battery from the toxicity of each component of lithium battery to human body. Its composition has the following types: 1. Positive and negative current collectors. Use aluminum foil for the positive electrode and copper foil for the negative electrode. It is also possible to weld some nickel tapes for connection and conduction. These are basically non-toxic. Some waste lithium battery recycling units that have emerged today rely on recycling these and steel shells and aluminum shells to make money. Recyclable, no pollution. 2. Anode material. Generally graphite, a few may be lithium titanate or silicon-based materials. Graphite is divided into natural graphite and artificial graphite. Natural graphite is derived from graphite ore, and then some production is carried out. The mining of this natural graphite is still relatively serious, and it is mainly the damage to the respiratory tract. 3. Cathode material. Current positive electrodes include lithium iron phosphate, lithium manganate, ternary materials, lithium cobalt oxide, and lithium nickel cobalt aluminate. Lithium iron phosphate is generally used as a car battery or energy storage battery and is non-toxic. 4. Electrolyte. It is composed of organic solvents and lithium salts. Organic solvents generally include PC, EC, DEC, DMC, DME, etc., among which DMC is mild, and the others are non-toxic. Lithium salt is lithium hexafluorophosphate (the most used, and there are other lithium salts). It will hydrolyze to produce HF when it meets water, which is toxic. 5. Shell. There are several categories: aluminum shell, steel shell, plastic shell, aluminum plastic film. Among them, aluminum shell and steel shell are non-toxic. Plastic shell and aluminum plastic film are white pollution. 6. Diaphragm. Generally, it is a microporous film of polyolefin type, PP, PE, white pollution. Generally speaking, lithium battery processing has little impact on the environment. Regardless of processing, use and scrap, it does not contain or present any toxic and harmful heavy metal elements and substances such as lead, mercury, and cadmium. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the advantages and disadvantages of lithium iron phosphate power lithium ion batteries