Lithium Battery Separator Industry Chain

Lithium Battery Separator Industry Chain – Coated Lithium Battery Separator – Cheersonic

The upstream of the lithium battery separator industry chain is the basic raw material polyethylene (PE) or polypropylene (PP), PE and PP. These are all commodities and account for 40% of the cost of the diaphragm. From the perspective of diaphragm production process, raw material formulation technology, extrusion process, film stretching process and micropore preparation process are the core.

The downstream of the separator is various battery factories. Different types of batteries use different separators, such as multi-layer separators, organic-inorganic composite membranes, ceramic-coated separators, and new separators. Therefore, when the diaphragm is used in battery production, it needs to be adapted to the automatic production line of the battery factory, otherwise there may be a large number of “waste diaphragms”.

In order to meet different battery performance requirements, the production of coating is mainly customized production, and the coating process is divided into homogenization, coating, slitting and packaging. Among them, the slurry formulation reflects the differences. The technical barriers for coating are higher, and the early formulations and technologies are in the battery factory. The company independently develops the coated diaphragm, and then finds an OEM company. This is to strengthen the bargaining power of the base film factory on the one hand, and to ensure that the formula is not leaked on the other hand.

Ultrasonic spraying is ideal for deposition of solar cells, fuel cells, lithium battery, silicon cell coatings, and is increasingly used in research and production of spraying processes. Ultrasonic Spraying Energy Materials technology can be used to deposit uniform and extremely thin coatings on substrates of any width. Ultrasonic spraying technology enables very thin coatings with extremely high uniformity, resulting in improved electronic conversion rates and transport.