Mechanical strength, thickness, porosity, pore size, chemical stability, wettability (with electrolyte), thermal shrinkage, thermal shutdown temperature, cost, etc.
The main PE, PP and composite separators are Celgard. Others include Japanese Asahi Kasei, Mitsubishi, NKK, etc.
Are you a foreign brand or do you do it yourself?
Can alkaline battery separator paper be used as lithium ion battery separator paper?
The density of lithium ion battery separator is not a fixed value. Its density is different. from that of the separator. There is a direct relationship between materials and porosity. In industry, density is not simply calculated. The calculation formula is as follows:
PE density. : 0.95g/cm3
p>pp density: 0.90g/cm3
Below link is the national standard "GB∕T 36363-2018 Polyolefin separator for batteries lithium-ion", you canez go to know more
Web link
Alkaline battery separator paper can be used as lithium ion battery separator paper
Sound role in lithium-ion batteries is to insulate the positive and negative electrode materials. The quality of the separator paper directly affects the safety performance and battery capacity. Therefore, choosing high-quality separator paper is already the only solution for battery manufacturers.
There are generally two types of separator paper:
First, three-layer separator paper of PP, PE and PP is used. Currently, there is the American CELGARD and the Japanese UBE. The characteristic of this type of separator paper is to reduce costs, but the manufacturing process is complicated, which is especially difficult for ultra-thin films below 16 µm.
Second, for single-layer PE separators, there are currentment three companies: Asahi Kasei from Japan, Tonsen and ENTEK from the United States. This type of separator paper being a single-layer PE, the production cost is high, but it is particularly suitable for manufacturing ultra-thin separators below 16 µm, so it is favored by large battery manufacturers such as Sanyo, Sony , Panasonic, Maxwell. , etc. Almost all high-quality Japanese batteries use single-layer PE separators. Our company is an agent of American ENTEK single-layer PE separator, which uses ultra-high molecular weight polyethylene.
Function of battery components and separator paper
1. Anode 1. Prevent physical contact between anode and cathode
2. Cathode 2. Ensure movement of lithium Ion channel
3. Diaphragm paper (+polymer) 3. Safety
4. Liquid, electrolyte 4. Engineering type
5.