Celgard 2500 Spain

What makes Celgard® membranes unique?

The unique polyolefin molecular properties created by our patented dry-stretch manufacturing process also make Celgard® membranes ideally suited for several barrier-type applications.

Why is Celgard a good battery separator?

Celgard’s machine direction (MD) only stretched base films are uniaxially-oriented in the machine direction (MD) with high strength and practically zero transverse direction (TD) shrinkage. As a battery separator, these features significantly improve cell manufacturability and safety.

Why is Celgard a solvent-free battery manufacturer?

Celgard’s solvent-free manufacturing process results in chemically and thermally stable products that are used in a broad range of energy storage and other barrier-type applications, including lithium-ion batteries, lithium primary and select specialty battery solutions.

Are Celgard® separators PFAS free?

Celgard® ceramic and adhesive coated separators are produced using water-based binders. PFAS free* adhesive coating options available. Celgard® has the original patent position on CCS, including US 6,432,586 “Separator for High Energy Rechargeable Lithium Battery” patents.

What are Celgard® ceramic coated separators (CCS)?

Celgard® ceramic coated separators (CCS) offer improved safety and stability at elevated temperatures. Optional proprietary adhesive coatings provide strong adhesion to electrodes both before and after electrolyte filling. Multilayer (Ceramic and adhesive coated) separators are in advanced development stage.

Why should you choose Celgard® pp-based separators?

The oxidation resistance of Celgard® PP-based separators provides improved durability at higher voltages – allowing increased energy density designs. Depending on cell design and chemistry they can be used without ceramic coating – reducing separator and cell weight.