PE Film Battery Separator performance requirements

Lithium ion battery separators have several key requirements to ensure battery safety and performance.Here is some requirements:
● Electronic insulation;
● Appropriate pore size and porosity;
● Good electrochemical stability and resistance to electrolyte corrosion;
● Good thermal stability, low closed cell temperature and high fusing temperature;
● Good affinity with the electrolyte, with a certain liquid absorption rate;
● Sufficient mechanical properties and small thickness;
● Good spatial stability and flatness.