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NKK Cellulose separator (Low ESR Type) - TF4030
TF4030 Cellulose separator roll, 60mm x 100m.
Primary Applications
Cellulose separator for large cells, low Equivalent series resistance (ESR) type.
Product Benefits
• High reliability, Lower ESR
• High electrolyte holding ratio
Cellulose based separator by Nippon Kodoshi Corporation. Highly absorbing and holds a good amount of electrolyte. Designed for low internal resistance. It is often used in supercapacitors, but can also be suitable for some batteries.
Technical Data (Typical Properties)
| Basic Film Properties | Unit of Measure | Typical Value |
| Thickness | μm | 30 |
| Width | mm | 60 |
| Length | mm | 100 |
| Density | g/cm3 | 0.40 |
| Porosity (calculated) | % | 73 |
| Moisture | % | 5 |
| Tensile Strength | N/15mm | 10.3 |
| Air Resistance | sec/100cc | 109.6 |
| Water Absorption | mm/10min | 35 |
| pH | - | 6.2 |
Remark Because TF is made from cellulose, it tends to absorb moisture, and depending on circumstances, it might contain 7-10% moisture.
When assembling cells with TF, unless you are using aqueous electrolytes, sufficient drying is required. The recommended drying condition is in the range of 100-160°C within 24 hours by vacuum drying.
After drying procedure, please handle the products under the low dew point environment. Recommended dew point is less than -50°C. In the drying procedure, the products may shrink about 1% lengthwise and widthwise, so please design your product after taking this shrinkage into consideration.