What are the types of lithium battery separators?

What are the types of lithium battery diaphragms? Polyolefin diaphragms: resistant to high and low temperatures, low density; coated polyester film: made of polyethylene terephthalate as raw material, made into thick sheets by extrusion, and then Film material made by biaxial stretching. It is widely used in FRP industry, building materials industry, printing industry, medicine and health. The price of polyester film is relatively high, and the thickness is generally 0.012mm. Since China's processing volume and technical level still cannot meet the market demand, some still need to rely on imports; cellulose membrane: high strength, fast filtration speed, can capture coarse particles, can also collect gelatinous sediments, and has low resistance. Low impurity content; Polyimide membrane: has excellent heat resistance and oxidation stability, but due to the harsh conditions of polyphthalimide synthesis and membrane production, the cost is high, which hinders further application in membrane separation technology; Polyamide membrane: from the perspective of hydrophilicity and hydrophobicity theory, polyphthalamide should be a better reverse osmosis membrane material; spandex or aramid membrane: high temperature resistance, low temperature output, long battery charging cycle life, moderate mechanical strength characteristics ; Non-woven diaphragm: composed of oriented or random fibers, usually combined with organic matter or ceramic gel to obtain lithium battery separators with better chemical and physical properties; statement: article published on this site The pictures and content are from the Internet. If there is any infringement, please contact to delete the previous article: What are the important contents of UPS daily maintenance?