Development direction and prospect analysis of lithium battery diaphragm industry

The first development direction of the lithium battery diaphragm industry is to improve the heat resistance of the diaphragm. Technological progress, social development, and safety issues will inevitably receive more and more attention from the society, so it is very important to solve the heat resistance of the diaphragm. The second is to develop ultra-thin diaphragms. With the development of the market, lighter, thinner and smaller electronic products will continue to enter daily life. Such products require thinner lithium battery separators to make batteries. At the same time, the pursuit of capacity for lithium batteries should also develop thinner films. , But the processing and preparation of ultra-thin diaphragms have high requirements on equipment and technology. The third is to improve the liquid absorption performance of the diaphragm. At present, the capacity problem of lithium batteries has become more and more prominent. Whether it is a smart phone or a powered car, the contradiction between its standby time or cruising range and the needs of consumers has become increasingly prominent. If it is difficult for the company to make a better breakthrough in the ultra-thin battery separator, it can find ways to improve the liquid absorption performance of the separator, because improving the liquid absorption performance can also increase the battery capacity. The fourth is to develop new types of diaphragm products such as polymer electrolyte diaphragms and fiber diaphragms. Power lithium batteries pose higher challenges to the performance of diaphragms in terms of high-power fast charge and discharge and safety, which also makes the main materials used in lithium battery diaphragms develop from polyolefin materials to multiple materials and composite materials. The development prospects of lithium battery separators are driven by the rapid development of the domestic new energy battery industry. my country's lithium battery separator companies continue to increase, processing technology has achieved breakthroughs, and the process of localization of lithium battery separators has accelerated. Compared with foreign companies, the diaphragms processed by domestic companies were mainly dry-stretched, and mostly low-end products. High-end wet-process diaphragms have been monopolized by foreign companies for many years. However, in recent years, with the continuous improvement of domestic diaphragm processing companies in the wet processing technology, the production and performance of wet diaphragms are getting closer and closer to the level of foreign companies. Domestic companies have rapidly expanded the production of wet diaphragms. The pattern of the lithium battery diaphragm market has Changes. Because the processing technology of the diaphragm has a high technical barrier, its cost accounts for about 10%-20% of the cost of the lithium battery, and the gross profit rate can reach 50%-60%. It is the product with the highest gross profit margin among the four important materials. Therefore, Lithium battery separators are also considered by the industry as one of the industries with the most investment value in the lithium battery industry chain. Looking forward to the future, the lithium battery diaphragm industry, with the expansion of production and the price decline, can only through technological innovation to go to high-end products, and the output can maintain a relatively high level of profit. In addition, as production expands and prices rise, small companies without technical strength will be eliminated by the market. The rule that the leftover is king also applies to the lithium battery diaphragm industry. Disclaimer: The articles published on this website are all from the Internet. If there is any infringement, please contact to delete it. 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 polymer lithium battery charging methods and precautions for use