The separation membrane is one of the core materials constituting the secondary battery together with the cathode material,
the anode material, and the electrolyte,
and it plays a role of preventing the electrical short-circuit due to the
physical contact between the anode and the cathode,
it acts as a free pathway.
Product Features
- Material: Polypropylene
- Production method: Dry type
Product Usage
- Battery membrane for electric vehicles
Product Specification
Properties | Specified Value | Measurement Method | |
(μm) Thickness | 16 ~ 50 | Thickness Gauge | |
(%) Porosity | 40 ~ 70 | by Calculation | |
(sec/100ml) Air permeability | 50 ~ 300 | Gurley Densometer | |
(kgf/cm2) Tensile strength | MD | 1000↑ | Tensile Tester |
TD | 200↑ | ||
(%) Tensile rate | MD | 120↓ | |
TD | |||
(gf) Puncture Strength | 300↑ | 2mm / sec, Ø1.0mm Dia. | |
(%) Heat contraction rate | MD | 15↓ | 150°C / 1hr |
TD | |||
Shut-down Temperature | 163↓ | BFI Method | |
COMPANY: BFI INC. / CEO: Kim yun il
Address Sujeong-ro, Jangan-myeon, Hwaseong-si, Gyeonggi-do, Korea
Email: bfi354@hanmail.net / TEL: 031-354-6037
ⓒ 2020 B.F.I.
1st Factory
Head Office / 1st Factory 224-19 Sujeong-ro, Jangan-myeon, Hwaseong-si,
Gyeonggi-do, Korea
2nd Factory
2nd Factory 224-22 Sujeong-ro, Jangan-myeon, Hwaseong-si, Gyeonggi-do, Korea