Ceramic sheet separators for lithium ion batteries

Step1: A thin polyester nonwoven base is manufactured in a wet laid process. The thermal stability of the separator is guaranteed by carefully selecting adequate microfibers. 

Step 2: Inorganic particles are impregnated throughout the nonwoven in a water-based process using binders optimized specifically for use in lithium ion batteries. The solvent is then dried, leaving behind a microporous structure with defined properties.

The cross-sectional view shows the unique single-layer construction of the ceramic sheet separators, which ensures uniform porosity throughout the material. With their superior mechanical properties, our separators can be used in all common cell designs: cylindrical, jelly flat, z-fold or separator stack design.