An introduction to the recent growth of high-end barrier technologies for lithium-ion batteries

Lithium-ion battery barrier technology is a pain point of my country's power lithium battery industry at present. Among the materials for lithium-ion batteries, the materials for the positive and negative electrodes and the electrolyte have basically achieved localization at present, but the barriers started relatively late, and the maturity of the skills of domestic companies is not high. Although the localization rate of lithium-ion batteries in my country has been continuously increasing in recent years, it is the low-end 3C battery market that occupies the most important part. The localization rate of high-end batteries is still very low, and the barriers for high-end 3C batteries and power lithium batteries are still Rely heavily on entrance. As we all know, in the layout of lithium-ion batteries, the barrier is one of the key inner components. It is necessary to prevent the positive and negative electrodes from fighting, and to ensure the passage of electrolyte ions. Therefore, the quality of the barrier will directly affect the battery's characteristics such as capacity, reincarnation, and safety performance. A barrier with excellent quality has an important purpose to improve the overall performance of the battery. The barrier is currently a high-value-added material with the highest technical barrier among lithium battery materials, accounting for about 15% of the cost of lithium-ion batteries. The technical difficulty lies in the engineering skills, matrix materials, and manufacturing equipment for making holes. The current common problem in domestic barriers is inconsistency, which mainly means undisciplined defects, substandard porosity, thickness, pore diffusion, and uneven pore diffusion. The uniaxially stretched domestic PP barrier is close to overseas products in terms of porosity and pore size diffusion; the two-way stepwise stretched PE barrier has a low porosity compared with overseas products, and the pore diameter diffusion environment is not aspirational. These problems are potential risks that the industry is subject to, and if it is not handled well, it will probably end the healthy growth of my country's lithium battery industry. High-end lithium-ion battery barrier skills have a very high threshold. Not only need to invest a huge amount of money, but also have a strong Ru0026D and production team, skilled craftsmanship and a high-level production line, and it can be broken in a short time. However, the Sino-US business war and the ZTE Huawei incident have already sounded the alarm for my country's manufacturing industry. For the entire power lithium battery industry, it is urgent to break the high-end barrier of lithium-ion battery technology as soon as possible. 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 post: What are the advantages of special lithium-ion batteries in comparison with civilian lithium-ion batteries