Description
ATOMFAIR® WET PROCESS PE SEPARATOR 7μm (MODEL: AFSPPE7U60mm10m)RESEARCH GRADE MATERIAL – LI-RICH MN-BASED SPECIAL
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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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The separator must be stored sealed in a low-temperature, dry, and well-ventilated environment to avoid moisture absorption and dimensional change. It must be kept away from fire, heat sources, sunlight, and rain to prevent thermal degradation and contamination.
- Sealed Storage Requirement: Store the separator in a sealed plastic bag with buffer pad to protect against moisture and physical damage.
- Environmental Controls: Maintain a dry, well-ventilated environment at normal or low temperature to preserve the separator's dimensional stability.
- Thermal Hazard Avoidance: Keep away from fire and heat sources to prevent thermal damage to the polyethylene film.
- Light and Moisture Protection: Avoid exposure to direct sunlight and rain to prevent UV degradation and moisture absorption.
How does the 7 μm thickness of this wet-process PE separator affect its mechanical integrity compared to thicker separators?
The 7 μm thickness reduces ionic resistance for improved rate capability but lowers mechanical strength. With a puncture strength of 339 g and longitudinal tensile strength of 221 kg/cm³, it is weaker than thicker variants like the 16 μm PE separator (535 g puncture, 192 kg/cm³ tensile). This trade-off requires careful handling during cell assembly to avoid tearing, as the thinner film provides less physical robustness.
Is this wet-process PE separator suitable for use in batteries other than lithium-rich manganese-based chemistries?
The separator is explicitly designed for lithium-rich manganese-based batteries, but its 40% porosity and 155 s air permeability are standard for many lithium-ion systems. However, the 135°C melting temperature and 1.2% longitudinal heat shrinkage (MD) may restrict use in high-voltage or high-temperature chemistries requiring greater thermal stability. Compatibility with alternative electrolytes and operating conditions must be verified before use.
What are the critical storage and handling requirements for this 7 μm PE separator to prevent damage before use?
The separator must be stored sealed in a normal or low temperature, dry, well-ventilated environment, away from fire and heat sources. During transport, avoid exposure to sunlight, fire baking, and rain. The 7 μm thickness makes the film highly fragile, so the provided packaging of plastic sealed bags and buffer pads must remain intact to protect against physical damage until assembly.
This Atomfair Wet Process PE Separator (7 μm, 60 mm × 10 m) is engineered for lithium-rich manganese-based batteries, balancing ultra-thin geometry with high puncture resistance for energy density. However, the PE substrate's 135 °C melting point and strict dry storage requirements present thermal and environmental constraints for lab deployment.
Positive
- Ultra-thin 7μm for high energy density: At 7 μm total thickness and 4.3 g/m² areal density, this separator minimizes volume and mass within the cell stack, directly supporting higher volumetric and gravimetric energy density in lithium-rich manganese-based battery designs.
- High puncture strength at low thickness: With a puncture strength of 339 g, this 7 μm PE separator provides robust mechanical integrity against dendrite penetration and electrode irregularities, reducing short-circuit risk during cell assembly and cycling.
Trade-offs
- Low melting point limits thermal stability: The PE base film melts at 135 °C, significantly lower than PP-based separators, making it more susceptible to thermal runaway under extreme heat or high-rate charging conditions.
- Strict storage environment requirements: The separator must be stored sealed in a dry, well-ventilated environment away from heat sources and sunlight; exposure to moisture or heat can degrade performance, requiring careful inventory management in lab settings.
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).
