Description
Atomfair PP-PE-PP Composite Battery Separator Roll (For Lithium-ion Batteries)
Product Overview
This high-performance PP/PE/PP three-layer composite separator roll is exclusively engineered for lithium-ion batteries, available only in roll form to meet the production and R&D needs of new energy battery manufacturers and research institutions. As a core isolation component, its layered structure achieves an optimal balance of ionic conductivity and thermal stability, ensuring reliable electrode isolation and enhanced battery performance.
Core Specifications & Dimensions
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Parameter
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Technical Value
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Product Form
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Roll (continuous length)
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Roll Size
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400m (length) * 60mm (width) * 25±4um (thickness)
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Outer Packaging Size
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16in * 8in * 8in (L*W*H)
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Key Performance Parameters
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Parameter
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Technical Value
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Air Permeability
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19-29s/100ml
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Porosity
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40±5%
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Surface Density
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1.15-1.55mg/cm²
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Tensile Strength
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MD ≥700kgf/cm²; TD ≥70kgf/cm²
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Thermal Shrinkage (85℃, 4h drying)
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MD ≤5%; TD ≤1.0%
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Core Functional Advantages
Optimized Layered Structure for Dual Performance
The PP/PE/PP three-layer design combines the high mechanical strength of polypropylene (PP) with the superior thermal shutdown capability of polyethylene (PE). This dual advantage ensures effective electrode isolation under normal conditions and prevents thermal runaway during overheating.
Excellent Ionic Conductivity for Cycle Stability
Uniform porosity and pore distribution enable efficient lithium-ion transport between positive and negative electrodes, reducing ion transfer resistance and improving the battery’s cycle life and rate discharge performance.
Controlled Thermal Shrinkage for Enhanced Safety
Low thermal shrinkage rate at 85℃ maintains structural integrity during high-temperature operation, avoiding direct contact between electrodes and significantly lowering short-circuit risks in battery applications.
Application Scenarios
This composite separator roll is a versatile solution for lithium-ion battery production and R&D, ideal for the following scenarios:
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Mass production lines of consumer electronics batteries (tablets, power banks, wearable devices)
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Electric vehicle (EV) and energy storage system (ESS) battery cell development and pilot production
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New energy battery material performance testing and optimization experiments
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Custom lithium-ion battery manufacturing projects requiring high safety and long cycle life
Quality Compliance
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Polypropylene and polyethylene raw materials comply with ISO 10993 chemical inertness standards, ensuring no adverse reactions with battery electrolytes.
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Mechanical performance testing adheres to ASTM D882 (tensile strength) international protocols, guaranteeing consistent batch performance.
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Thermal shrinkage testing meets IEC 61960 battery component safety requirements, aligning with global lithium-ion battery industry standards.
If you’re interested, have any questions, or have specific customization requirements, please feel free to contact us at inquiry@atomfair.com.
