Colloid mill for lithium polymer gel diaphragm

Gel polymer nano diaphragm disperser, nano diaphragm disperser, nano diaphragm high shear disperser, high shear disperser, ultra-high speed disperser

Nano membrane agent is a surface treated nanocomposite with insulation, heat insulation, and high temperature resistance properties; If a layer of nano separator agent is coated on the separator, it can prevent short circuits between electrodes and improve the safety of lithium battery use.

As an important component of lithium-ion batteries, the separator is composed of porous polyolefin polymer materials; The electrolyte system is composed of a mixture of organic carbonates and lithium hexafluorophosphate. Although it has high ionic conductivity, the flammable nature of liquid carbonates poses a safety hazard to lithium-ion batteries. The gel polymer membrane prepared by the polymer that can gel the liquid electrolyte system combines the advantages of the high conductivity of the liquid electrolyte system and the high security of the solid electrolyte system. The research of gel polymer diaphragm started from the simple microporous gel polymer diaphragm, and went through the development process of doped gel polymer diaphragm with a small amount of nano inorganic particles, to gel ceramic diaphragm with a large number of nano particles.

The invention relates to a preparation method of gel polymer coating composite membrane and a battery separator In this method, firstly, the gel polymer particles and the base film are grafted with amino and carboxyl groups respectively, and then the coating slurry containing gel polymer particles, condensation agent and adhesive is prepared with water as the solvent. * * The coating slurry is coated on the base film, and the gel polymer particles are fixed on the surface of the base film by the polymerization of amino and carboxyl groups The preparation method of the application uses the chemical bond of polymerization reaction to fix the gel polymer particles on the surface of the base film, which improves the peeling strength of the gel polymer coating and the base film, and solves the problems of powder falling and falling off; Meanwhile, due to the use of water as the solvent, it is environmentally friendly and pollution-free, and there are no issues with organic solvent recovery or exhaust emissions

The nano separator and adhesive are proportioned and dispersed into a slurry through a high shear disperser, and then coated onto the battery separator.

With the application of convenient electronic devices, lithium-ion batteries have become increasingly widely used due to their high specific energy and high safety characteristics. As an electronic device, it has always been a goal pursued by people in terms of thin thickness, small area, light weight, especially high energy, no leakage, and long life. Compared with liquid flexible packaging battery, gel polymer battery is a new research field in recent years. Gel electrolyte can realize the gel of electrolyte, which has great advantages in safety and leakage prevention. Especially, it has high heat resistance and stability, which can maintain the structural stability of the electrode pieces inside the battery cell under high temperature motion.

XMD2000 improved ultra high speed colloid millIt is a high-tech product composed of a colloid mill and a disperser.

The first level consists of three-level sawtooth protrusions and grooves with increasing precision. The stator can be infinitely adjusted to the desired distance between the rotors. Under enhanced fluid turbulence. The groove can change direction at each level.
The second stage is composed of a stator. The design of the dispersing head also effectively meets the needs of substances with different viscosities and particle sizes. The difference in the design of the stator and rotor (emulsifying head) between online and batch machines is mainly due to the requirements for conveying performance. It is particularly important to note that the difference between coarse precision, medium precision, fine precision, and other types of working heads is not only the arrangement of specified rotor teeth, but also an important difference in the geometric characteristics of different working heads. The width of the slot and other geometric features can alter the different functions of the stator and rotor working heads.

The following is a model table for reference:

Colloid mill for lithium polymer gel diaphragm