Cell Lab Polypropylene (PP) Battery Separator Roll [Dry Process]

Cell Lab Polypropylene (PP) Battery Separator Roll [Dry Process]

High-strength dry-processed PP separator for lithium-ion battery safety and efficiency

The Cell Lab Polypropylene (PP) Battery Separator Roll is manufactured through a precision dry-stretching process to deliver outstanding mechanical strength, chemical resistance, and controlled thermal shutdown behaviour. Designed for lithium-ion battery systems, it ensures high safety performance and consistent electrochemical stability across a wide range of operating conditions.

This dry-process PP separator combines mechanical robustness with cost efficiency, making it suitable for both R&D and large-scale battery manufacturing. Its recyclable composition supports sustainable production while maintaining excellent pore uniformity and ionic transport.

Key Features

• High Mechanical Strength – Exceptional tensile and tear resistance minimises handling damage during winding and stacking.

• Chemical Stability – Superior resistance to electrolyte solvents ensures long-term structural and electrochemical integrity.

• Thermal Shutdown Protection – Controlled pore collapse at ~145 °C enhances battery safety against overheating.

• Efficient Production – Dry process technology enables scalable, cost-effective separator fabrication.

• Optimised Porosity – Uniform microporous network supports consistent ionic conductivity and cell efficiency.

• Sustainable Material – Fully recyclable polypropylene supports environmentally responsible manufacturing.

Specifications:

Applications & Industries

• Lithium-ion battery production and prototyping

• Pouch, cylindrical and prismatic cell formats

• Cathode and anode separator layer fabrication

• Energy storage and electric vehicle R&D

• Sustainable, recyclable battery material supply chains

FAQ

Q1: What is the main difference between dry and wet separators?
A1: Dry separators offer higher mechanical strength and recyclability, while wet separators provide slightly higher porosity and electrolyte absorption.

Q2: Does this separator support high-voltage electrolyte systems?
A2: Yes. Its polypropylene structure remains chemically stable under high-voltage (up to 4.5 V) conditions.

Q3: Is it suitable for fast-charging battery cells?
A3: Yes. The uniform microporous structure supports efficient ion transfer required for rapid charge–discharge cycles.

Q4: Can it be used with ceramic coatings?
A4: Absolutely. PP base films are compatible with ceramic or hybrid coatings for enhanced thermal protection.

Q5: How should it be stored to maintain stability?
A5: Store in a clean, dry room below 40 °C and 60 % relative humidity to prevent moisture absorption and deformation.