Difference between dry separator and wet separator of lithium ion battery

The difference between dry method and wet method:

1, the dry process is simple, and the investment in fixed assets is smaller than that of wet process; However, it is difficult to control the temperature of dry process, and the wet process is simpler.

2. Dry method can be used as a three-layer membrane, while wet method can only be used as a single-layer membrane;

3. Dry method and wet method use different raw materials except processing technology.

4. The raw materials used in dry process have good fluidity and low molecular weight, so the high temperature can only reach 135 degrees.

5. It contracts when heated (

6. In the production of general lithium batteries, dry method has the advantages of low cost, less pollution and more uniform holes. Wet method has advantages in high-power batteries, mainly low safety and low thermal shrinkage.

1, Lithium-ion battery: It is a kind of secondary battery (rechargeable battery), which mainly depends on the movement of lithium ion between the positive electrode and the negative electrode.

2. Li+ is intercalated and deintercalated between two electrodes during charging and discharging:

3. When charging, Li+ is deintercalated from the positive electrode and embedded into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; The opposite is true when discharging.

4. Batteries generally use lithium-containing materials as electrodes, which is the representative of modern high-performance batteries.

5. Development process of batteries: Early lithium-ion batteries were developed from lithium batteries, and lithium-ion batteries were rocking chairs.