Process of Lithium Battery Ternary Cathode Material -Lithium - Ion Battery Equipment
The three important links in the production of ternary materials for lithium-ion batteries are mixing abrasives, high-temperature sintering, and crushing and decomposition. The control of each link and the performance of equipment will have a direct or indirect impact on the final product. Among them, grading, screening and packaging are the last links of ternary materials. Let's understand these links.
●Grading
The particle size distribution of ternary lithium-ion battery materials will affect the specific surface area, compaction density, pole piece processing performance and electrical performance of the battery. The crushing equipment can only control the particle size of the material, but cannot control the particle size distribution of the material. For the classification of ternary materials, an air classification device is generally added after the air pulverizer, and the pulverized products are directly classified.(Lithium - Ion Battery Equipment)
According to the particle size distribution requirements of ternary materials, different air classifiers and classification processes can be selected.
●Sifting
In order to prevent the material from containing foreign matter or coarse particles, it is also necessary to sieve the ternary material of the lithium-ion battery. The Dmax of the ternary material is at least less than 50μm, but sometimes the Dmax exceeds the standard. The screening efficiency of vibrating screen is high, generally 80%~95%; the range of sieving raw material particle size is large, from more than 250mm to 0.1mm or 0.01mm; the output per unit area is large; it is easy to adjust, and the screen holes are less blocked. This kind of sieve requires special transmission equipment and consumes power.
Regarding the whole work of the vibrating screen, the most important parts are the screen, the motor and the bearing. In the use of ternary materials for lithium-ion batteries, the selection of screens is critical. Because the process of ternary material should prevent the introduction of iron impurities or other metals, the material of the screen should be non-metallic and resistant to alkali corrosion.
●Packaging
Ternary lithium-ion battery materials are generally packaged in vacuum or filled with inert gas after vacuum. There are many varieties of vacuum packaging machines, which are usually divided into mechanical extrusion type, intubation type, chamber conveyor belt type, rotary table type and thermoforming type. The principle of mechanical extrusion vacuum packaging is: after the packaging bag is filled, use elastic items such as sponges on both sides to remove the air in the bag, and then seal it. This method is the simplest, but the vacuum degree is low, and it is used in occasions where the vacuum degree is not required.
At present, lithium ion battery cathode materials are mainly lithium cobalt oxide, lithium manganate, lithium iron phosphate, and ternary cathode materials, which are mainly used in 3C, power lithium batteries, and energy storage fields. At present, lithium ion battery cathode materials are mainly lithium cobalt oxide, lithium manganate, lithium iron phosphate, and ternary cathode materials, which are mainly used in 3C, power lithium batteries, and energy storage fields.
●Grading
The particle size distribution of ternary lithium-ion battery materials will affect the specific surface area, compaction density, pole piece processing performance and electrical performance of the battery. The crushing equipment can only control the particle size of the material, but cannot control the particle size distribution of the material. For the classification of ternary materials, an air classification device is generally added after the air pulverizer, and the pulverized products are directly classified.(Lithium - Ion Battery Equipment)
According to the particle size distribution requirements of ternary materials, different air classifiers and classification processes can be selected.
●Sifting
In order to prevent the material from containing foreign matter or coarse particles, it is also necessary to sieve the ternary material of the lithium-ion battery. The Dmax of the ternary material is at least less than 50μm, but sometimes the Dmax exceeds the standard. The screening efficiency of vibrating screen is high, generally 80%~95%; the range of sieving raw material particle size is large, from more than 250mm to 0.1mm or 0.01mm; the output per unit area is large; it is easy to adjust, and the screen holes are less blocked. This kind of sieve requires special transmission equipment and consumes power.
Regarding the whole work of the vibrating screen, the most important parts are the screen, the motor and the bearing. In the use of ternary materials for lithium-ion batteries, the selection of screens is critical. Because the process of ternary material should prevent the introduction of iron impurities or other metals, the material of the screen should be non-metallic and resistant to alkali corrosion.
●Packaging
Ternary lithium-ion battery materials are generally packaged in vacuum or filled with inert gas after vacuum. There are many varieties of vacuum packaging machines, which are usually divided into mechanical extrusion type, intubation type, chamber conveyor belt type, rotary table type and thermoforming type. The principle of mechanical extrusion vacuum packaging is: after the packaging bag is filled, use elastic items such as sponges on both sides to remove the air in the bag, and then seal it. This method is the simplest, but the vacuum degree is low, and it is used in occasions where the vacuum degree is not required.
At present, lithium ion battery cathode materials are mainly lithium cobalt oxide, lithium manganate, lithium iron phosphate, and ternary cathode materials, which are mainly used in 3C, power lithium batteries, and energy storage fields. At present, lithium ion battery cathode materials are mainly lithium cobalt oxide, lithium manganate, lithium iron phosphate, and ternary cathode materials, which are mainly used in 3C, power lithium batteries, and energy storage fields.
