Lithium battery separator production and packaging pictures

What is lithium battery separator film?

Lithium battery separator film is the key component of the structure of lithium batteries. The film is made of plastic, which prevents direct contact between the anode and cathode to avoid the short circuit.

What is a battery separator?

There are many important components in the LiB, one of which is a separator that serves to block short circuits between the anode and cathode of the battery while providing a way for ion exchange to continue. This article summarizes important information related to battery separator technology.

Why is a battery separator important?

Although separator is an inactive element of a battery, characteristics of separators such as porosity, pore size, mechanical strength, and thermal stability influence the ion transport, cycle life, performance, and safety of the batteries . Thus, the separator represents one of the key components in LIBs.

What does a lithium-ion battery separator do?

With this vast experience gained, we know in the meantime what really matters in this business,” Alexander Bruckmüller, Product Manager at SML explains. But which functions does a separator basically have in a lithium-ion battery? Its main purpose is to keep the two electrodes apart to prevent electrical short circuits.

What is the thermal shrinkage of a Lithium Ion Separator?

Thermal shrinkage A separator with low melting temperature tends to melt and shrink, which causes pore blockage and eventually terminates the ion transport between the electrodes . Thus, a separator with a shrinkage of <5% for 60 min at 200 °C has typically been desirable for LIBs .

Are ceramic-coated lithium-ion cell separators safe?

Ceramic-coated separators and high melting point polymer materials offer some improvement in thermal stability and abuse tolerance for lithium-ion cell separators but, in general, more evaluation is needed to quantify the safety impact of these new separators.