Ceramic sheet separators by Freudenberg Performance Materials are manufactured in a two-step process:
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.
Material | FS 3009 | FS 3011 |
FS 3012 Prelimary technical Data |
|
Material composition | Polyester/Ceramic | Polyester/Ceramic | Polyester/Ceramic | |
Thickness | [µm] | 25 | 22 | 19 |
Area Weight | [g/m²] | 35 | 33 | 28 |
Theoretical Porosity | [%] | 55 | 57 | 59 |
Gurley Value (100ml) | [s] | 120 | 100 | 80 |
Tensile Strength (md) |
[N/5cm] kgf/cm² |
40 332 |
30 270 |
16 175 |
Tensile Strength (cd) |
[N/5cm] kgf/cm² |
15 124 |
12 108 |
7 65 |