PE Separator

PE-8 is a wet-process polyethylene (PE) battery separator supplied as a continuous roll for laboratory and pilot-scale electrode/cell assembly. In lithium-ion cells, the separator is a microporous electrical insulator that prevents electronic shorting between electrodes while enabling ionic transport through electrolyte-filled pores.

Principle of operation

A PE separator functions by combining:

• Microporous ion pathways that hold electrolyte and support Li⁺ migration
• Electrical insulation to keep cathode and anode physically separated
• Thermal dimensional stability to reduce shrinkage-related failure under elevated temperatures
  
  

Key specifications

• Width: 455 mm
• Thickness: 8.0 ± 1.0 µm (uncoated; coating thickness 0 µm)
• Length: 1000 m roll
• Air permeability (Gurley): 120 ± 50 sec/100 mL
• Porosity: 45 ± 5%
• Tensile strength: MD ≥ 1000 kgf/cm²; TD ≥ 1000 kgf/cm²
• Puncture strength: ≥ 300 g
• Heat shrinkage (1 h): 90°C (TD ≤ 1.0%, MD ≤ 2.0%); 130°C (TD ≤ 1.5%, MD ≤ 2.5%)
  
  

Compatibility & applications

Ideal for electrolyte systems commonly used in Li-ion research and compatible with typical coating/lamination and slitting workflows. Suitable for:

• Coin/pouch cell prototyping and separator screening
• Rate capability and impedance studies (pair with potentiostats/EIS)
• Safety-oriented experiments where low shrinkage is important
  
  

Why ScienceGears

ScienceGears supports Australian & NZ battery researchers with separator rolls plus complementary equipment such as battery cyclers, coin-cell assembly tools, glovebox consumables, and electrochemical test instrumentation.