Li ion Battery Separator is one of the key internal components of lithium-ion batteries. In the structure of lithium-ion batteries, the separator is between the positive and negative electrodes, and its main function is to isolate the positive and negative electrodes and prevent the two electrodes from directly contacting each other and causing a short circuit.

Lithium Ion Battery Separator is a key battery component made of polypropylene (PP) and polyethylene (PE) materials. It is usually in the form of a white roll with a thin thickness, a delicate texture and a uniform surface.