Explanation

The main function of the separator is to separate the positive and negative electrodes of the battery to prevent short circuit caused by the contact between the positive and negative electrodes. In addition, it also has the function of making the electrolyte ion conductive. Commonly used separator materials include polydilute porous separator, such as polypropylene and polyethylene porous separator materials. The performance requirements of separator include: ensuring the uniformity of thickness; Maintain thermal stability within the temperature range of battery use (-40-60 ° C); The porosity is about 40%; Simultaneously possessing certain tensile strength and puncture resistance; It has good wettability, chemical stability and safety.

Classification