Description
ATOMFAIR® WET-PROCESS PE BATTERY SEPARATOR ROLLRESEARCH & PRODUCTION GRADE MATERIAL
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TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This polyethylene separator roll requires controlled storage and handling to maintain dimensional stability and mechanical integrity. Environmental limits and mechanical thresholds must be observed to prevent performance degradation during battery assembly.
- Thermal Exposure Constraint: Exposure to elevated temperatures must be limited to prevent thermal shrinkage beyond allowable limits.
- Mechanical Handling Constraint: Handling must avoid forces that could exceed the puncture strength threshold to prevent separator failure.
- Tensile Direction Constraint: Winding and unwinding operations must respect the directional tensile strength to avoid tearing or deformation.
How does the air permeability of this PE separator influence the rate capability of lithium-ion batteries, and what is the trade-off with mechanical strength?
The air permeability of 230±60s/100ml ensures low ionic resistance for efficient lithium-ion transport, supporting high-rate discharge and charge performance. This is balanced by the separator's ≥600G puncture strength and MD≥1600/TD≥1400 kgf/cm² tensile strength, which prevent electrode short-circuits during high-current cycling. The wet-process pore uniformity (44±5% porosity) allows this trade-off to be optimized for both power and safety.
Is this PE separator chemically compatible with LiPF6-based electrolyte solutions used in commercial lithium-ion batteries?
Yes, the polyethylene raw material complies with ISO 10993 chemical inertness standards, ensuring no adverse reactions with LiPF6-based electrolytes or other common battery electrolyte solvents. This compatibility enables stable long-term cycling without degradation of the separator's structural or electrochemical properties.
What handling and storage conditions are recommended to maintain the dimensional stability of this 20μm separator roll?
The separator should be stored below 90°C, as thermal shrinkage at 90°C for 2 hours is limited to ≤2.5% in MD and ≤1.0% in TD per IEC 61960. For handling, the tensile strength of MD≥1600 and TD≥1400 kgf/cm² allows standard winding tensions without deformation, but rolls should be kept in dry conditions and protected from sharp objects to maintain integrity.
This wet-process PE separator roll offers a balanced combination of uniform pore structure (44% porosity) and anisotropic mechanical strength (MD ≥1600, TD ≥1400 kgf/cm²) for lithium-ion battery production, with low thermal shrinkage (≤2.5% MD, ≤1.0% TD at 90°C) enhancing safety under mild thermal stress.
Positive
- Uniform pore structure for ion transport: Wet-process manufacturing creates evenly distributed pores (44±5% porosity) enabling smooth lithium-ion conduction between electrodes, optimizing battery rate performance and cycle stability.
- Balanced mechanical strength for assembly: High puncture resistance (≥600G) and balanced MD/TD tensile strength (≥1600/1400 kgf/cm²) resist damage from electrode burrs and winding stress in high-volume cell assembly, reducing short-circuit risk.
Trade-offs
- Fixed roll format and narrow width: Available only in roll form with a fixed 60mm width, limiting usability for applications requiring sheet format or wider separator widths without additional cutting or modification.
- Thickness tolerance of ±2 µm on 20 µm: The 20±2 µm thickness specification (10% tolerance) may require tighter screening for precision battery designs where sub-micron uniformity is critical for consistent electrochemical performance.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
