Introduce the market status and development trend of lithium-ion battery separator materials

The market status and development trend of lithium-ion battery separator materials. In the structure of lithium-ion batteries, the membrane is one of the key internal components. The performance of the diaphragm determines the interface structure and internal resistance of the battery, which directly affects the capacity, cycle and safety performance of the battery. The diaphragm with excellent performance plays an important role in improving the overall performance of the battery. Lithium-ion battery separator. JPG Lithium-ion battery separator material market status At present, my country’s lithium-ion battery separator market is very bad in 2019. Firstly, due to the early state investment policy, there was a serious surplus of production. Second, affected by the national new energy industry policy, government subsidies for powered vehicles have decreased, and subsidy requirements have increased. Therefore, some lithium-ion battery manufacturers have encountered major problems in the capital chain, and lithium-ion battery manufacturers have also put forward new requirements for diaphragm suppliers in terms of price, quality, and payment days. In 2018, the domestic lithium-ion battery separator market has nearly 13 billion square meters of separator production released. The actual supply market is at least nearly 10 billion, but the actual domestic demand for separators is only 3 billion square meters. Some new separator manufacturers are positive. Facing the severe test, the product opened the market before the price of the product fell; the output has not yet been released and will be closed. The operating rate of some domestic diaphragm manufacturers is seriously inadequate, and a new production line is built here, and there is work that cannot be opened for orders on the production line. So the current market is very chaotic. The high is still very high, and the low is unbelievable. The quality is also very different. In 2017, the localization rate of my country's lithium battery separator industry reached 90%. Domestic diaphragm production has been able to meet the needs of most industries, but the demand for high-end diaphragms in the industry has to be met by imports. Therefore, with the technological advancement of my country's diaphragm companies, there is still room for domestic materials to replace imported materials. The domestic power lithium-ion battery separator market is relatively fragmented. In summary, the lithium-ion battery separator industry is in a cold period, and the entire industry has to be reshuffled, waiting for your survival in this round, and it is another sunny day! The required characteristics of lithium-ion battery separators are electronic Insulation to ensure the mechanical separation of the positive and negative electrodes; it has a certain pore size and porosity, low resistance and high ion conductivity, and has good permeability to lithium ions. Since the solvent of the electrolyte is a highly polar organic compound, the membrane must be resistant to corrosion by the electrolyte and have sufficient chemical and electrochemical stability. It has good wettability and sufficient moisture absorption capacity for electrolytes. It has sufficient mechanical properties, including puncture strength and tensile strength, but the thickness is as small as possible; good spatial stability and stability; good thermal stability, and good automatic shutdown protection performance. Power lithium batteries require a higher level of separator, usually a composite membrane. The development trend of lithium-ion battery separatorsLithium-ion battery separators have good mechanical properties, chemical stability and thermal isolation performance. To improve the overall performance of lithium-ion batteries, so that the energy density, cycle life, environmental protection and safety of lithium-ion batteries are superior to traditional lead-acid, nickel-cadmium batteries. Lithium-ion battery separators are also considered by the industry as one of the most valuable industries in the lithium-ion battery industry chain. With high gross profit margin and rapid rise, the lithium-ion battery separator market has a bright future. Lithium-ion battery energy storage, as the third application field of lithium-ion batteries, is restricted by practical difficulties such as technology, cost, and policy uncertainty. According to the needs of these three areas, it is estimated that by 2020, the lithium-ion battery separator industry will continue to maintain a compound increase rate of about 30%. The diaphragm produced by the wet process has high mechanical strength and has a safety advantage that the dry diaphragm cannot match. As the demand for power lithium batteries has become an important source of rising lithium-ion batteries, wet process has gradually become the mainstream of membrane technology development. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of the physical and chemical properties of lithium ion battery separators