Answer: Polyimide separator is a high-performance separator material with excellent thermal stability, mechanical strength and electrochemical stability, and is widely used in lithium-ion batteries. However, there are still some difficulties in realizing the industrialization of polyimide lithium-ion battery separators.
First of all, the preparation process of polyimide separators requires high-level technical and equipment support. At present, domestic research and development in this area is relatively lagging behind, and there is still a certain gap between it and the international advanced level. Therefore, improving the technical level of the preparation process is an important challenge for industrialization.
Secondly, the cost of polyimide separators is relatively high, which is also a factor restricting its industrialization. Currently, the production cost of polyimide materials is high, resulting in higher prices for separators, limiting their popularity in large-scale applications. Therefore, cost reduction is another key issue to achieve industrialization.
Finally, the performance stability and reliability of polyimide separators need to be further improved. With the widespread application of lithium-ion batteries in electric vehicles and other fields, the performance requirements for separators are becoming higher and higher. Therefore, improving the stability and reliability of polyimide separators to ensure that they will not fail during long-term use is another difficult problem that needs to be solved during the industrialization process.