Lithium ion Separator 25 μm PP Base Film Ceramic Coated


Model Number: M-PPC-25
Material: PP base film
Coating: Ceramic coated

Our ceramic-coated lithium ion separator is the essential material for lithium-ion batteries (LIB) which has been used in the broad fields of LIB application for many years.


Improved Battery Safety
Longer Battery Cycle Life
Higher Battery Performance

Product Description

M-PEC series ceramic-coated lithium ion separator is fabricated of PP base film, and its surface is coated with a nano-scale Al2O3 layer. After special chemical printing treatment, the Al2O3 material is printed on the surface of the base film, which significantly improves the high-temperature stability of lithium-ion batteries and enhances battery safety. M-PEC series products are one of the safest and most durable battery separator solutions for high-power performance lithium-ion batteries.  

Benefits of 25 μm lithium ion separator

  • Low TD/MD shrinkage reduces internal shorting.
  • Uniform pore structure with high chemical & thermal stability.
  • High porosity for excellent high-rate performance.
  • The ceramic coating layer provided superior high-temperature melt integrity.
  • Offers exceptional safety and longevity for energy applications.
  Primary Applications • Consumer electronics batteries such as notebooks, mobile phones, and digital cameras (mainly pouch type of cell) • High safety and high-frequency charge batteries for electric vehicles(large cell package) • Fast charging and discharging batteries for electric storage systems (large cell package) • Other types of cells(e.g., cylindrical)   Typical Properties  
Basic Film Properties Unit of Measure Typical Value
Base Film Thickness μm 25
Ceramic Coating Thickness μm 4
Gurley (JIS) Seconds/100ml 300±80
Porosity(calculated) % 43.5±3
TD Shrinkage @ 105℃ / 1 hours  % ≤3
MD Shrinkage @ 105℃ / 1 hours  % 0
TD Tensile Strength  Kg/cm² ≥120
MD Tensile Strength  Kg/cm² ≥1200
Puncture Strength  Grams Force (gf) ≥300
Shutdown Temperature  °C 165±2
Melting Temperature  °C ≥170
  Learn more about YOUME lithium ion separator fimls

Functional coatings available

Ceramic coatings

Improved oxidative stability, wettability, short prevention, and excellent structural integrity at an elevated temperature while maintaining overall separator thickness.

Adhesive coatings

Adhesive coatings can improve wettability and provide strong electrode adhesion. Therefore, it can enhance the integrity, safety, and cycle life of the battery cell.

Combined Coatings

We provide combined coating solutions to meet customers’ various needs. Combined coating contributes to chemical stability and thermal stability within the battery cell.



  • Single package size: 60X45X28 cm
  • Single gross weight: 18.0 kg
  • Package-Type: paper carton

Why Choose us?

Quick response to technical requirements with an optimum separator solution for you.

Our product and manufacturing technology provide stable supply capacity and excellent quality.

Well-established capability from R&D to high‐volume supply for membrane coating.

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