Celgard is a global leader in the development and production of specialty microporous membranes and is one of the largest suppliers to the lithium battery industry.

Our battery separators are among the most highly-engineered and critical components of lithium battery systems. They provide a barrier between the anode and the cathode, preventing short circuits, while enabling the exchange of lithium ions from one side of the battery to the other.

With commercial sales into the lithium battery market beginning in the early 1980s, Celgard has a long history of supplying separators for portable handheld devices such as notebook computers, mobile telephones, and digital cameras. And because of their unique characteristics and reliable performance, our separators are quickly being adopted into emerging high-performance applications including lithium power tools, backup power and electricity grid management systems, and - most significantly - electric drive vehicles (EDVs).

The use of lithium batteries in EDVs has allowed the market to continue to evolve, with power options and configurations taking on many forms from hybrids, to plug-ins, to full battery electrics and vehicles that include buses, taxis and other fleet vehicles. Oxidation resistance and dimensional stability over a wide operating temperature range are two of many features that allow CelgardĀ® battery separators to provide excellent chemical, mechanical and cycling performance in EDV lithium battery systems.

Visit Celgard's Website