Description

ATOMFAIR® AFSPPE20U60MM10M WET PROCESS PE SEPARATOR

RESEARCH GRADE MATERIAL

Product Overview

The ATOMFAIR® AFSPPE20U60mm10m is a heavy-duty 20μm wet-process polyethylene (PE) matrix specifically engineered for demanding lithium-rich manganese-based battery architectures. This thick-film configuration delivers superior mechanical robustness and enhanced short-circuit protection, while the optimized sub-micron porous network establishes rigorous cell-to-cell consistency, baseline testing control, and systematic variable elimination across advanced electrolyte validation workflows.

Technical Specifications

PARAMETER	DETAILS
1. Core Device & Electrochemical Design
Product Model	AFSPPE20U60mm10m
Base Material / Film	PE (Polyethylene)
Dimension Specification	60mm × 10m
2. Separator Matrix Physical Parameters
Base Film Thickness	20 μm
Total Thickness	20 μm
Width	60 mm
Areal Density	11 g/m²
Porosity	41 %
Air Permeability	224 S
Heat Shrinkage (MD / TD)	1.4 % / 0.1 %
Tensile Strength (MD / TD)	196 kg/cm³ / 165 kg/cm³
Puncture Strength	722 g
Melting Temperature	135 °C
3. Compliance & Sourcing Options
Manufacturing Rules	Processed under strict [ISO 9001 standard manufacturing compliance] conditions.
Alternative Options	Comprehensive matrix options available (AF-PP16, AF-PP20, AF-PP25, AF-PE7, AF-PE9, AF-PE12, AF-PE16, AF-PE20). For custom dimensions or institutional bulk orders, please contact our engineering support.

Key Features & Advantages

Extreme Puncture Resistance: Engineered with a reinforced 20μm polymer thickness achieving an exceptional 722g puncture threshold to effectively suppress dendrite penetration.
High Uniform Porosity: Features a calibrated 41% porous configuration coupled with a stable 224S air permeability layer, maximizing electrolyte wetness and ion transport paths.
Excellent Thermal Security: Demonstrates high structural reliability with a minimal 1.4% MD heat shrinkage factor, securing electrode insulation under high-temperature testing limits.

APPLICATION SCOPE: Highly recommended for critical Lithium-Rich Manganese-Based Battery Systems, high-safety energy storage cells, and demanding validation profiles.

PACKAGING: Securely wrapped using an internal Plastic Sealed Bag accompanied by a specialized vibration-damping Buffer Pad layer.

STORAGE ENVIRONMENT & HANDLING NOTICE: Sealed and stored in a normal or low temperature, dry and ventilated environment. Keep away from fire and heat sources; avoid direct sun exposure, fire baking, and rain during transportation to eliminate matrix contamination before definitive laboratory assembly.

TAILORED SOLUTIONS FOR RESEARCH

Contact our engineering team for technical support or official institutional quotations.

EMAIL: inquiry@atomfair.com

Manufacturer: Atomfair LLC

Brand: ATOMFAIR®

Constraints

This separator is a polyethylene membrane designed for lithium-rich manganese-based batteries. It requires careful thermal management and controlled storage to maintain dimensional stability and avoid mechanical damage.

Thermal Shrinkage Constraint: Exposure to elevated temperatures induces longitudinal and transverse shrinkage up to 1.4% and 0.1% respectively.
Puncture Resistance Requirement: Handle with care to avoid exceeding the 722-gram puncture strength limit during battery assembly.
Storage Environment Constraint: Store sealed in a dry, ventilated environment away from heat sources and direct sunlight to prevent moisture absorption and thermal degradation.
Melting Temperature Limitation: Do not expose the separator to temperatures approaching 135°C to avoid catastrophic melting and loss of structural integrity.

FAQ

How does the 722g puncture strength of the Atomfair 20μm wet PE separator compare to thinner PE separators in terms of mechanical integrity versus ionic transport?

The 20μm PE separator delivers a puncture strength of 722g, the highest among Atomfair's wet PE series (e.g., 12μm at 566g and 16μm at 535g), while maintaining a porosity of 41% and air permeability of 224 seconds. This trade-off provides superior dendrite resistance without compromising ionic conductivity, as the porosity remains consistent with thinner variants. The increased thickness inherently adds mechanical robustness at the cost of slightly higher ionic resistance compared to the 7μm variant (porosity 40%, air permeability 155s).

What specific properties of the Atomfair 20μm wet PE separator make it optimized for lithium-rich manganese-based batteries rather than standard lithium-ion chemistries?

The separator's ultra-high puncture strength of 722g provides essential dendrite suppression for high-voltage operation typical of lithium-rich manganese-based cathodes, while the melting point of 135°C and low heat shrinkage (MD 1.4%, TD 0.1%) ensure stability under thermal stress. The 20μm thickness and 41% porosity are engineered to balance mechanical support with adequate ionic transport for this demanding chemistry. No specific data in the description supports its use in other chemistries, so its optimization is solely for lithium-rich manganese-based systems.

What are the recommended storage conditions for the Atomfair wet PE separator, and why is a dry, cool environment critical for its performance?

The product must be stored sealed in a normal or low temperature, dry, ventilated environment, away from fire and heat sources, as stated in the storage requirements. This prevents moisture-induced degradation of the PE film, maintains the specified porosity and dimensional stability, and avoids heat shrinkage or melting given the 135°C melting point. Prolonged exposure to humidity or high temperatures could compromise the separator's mechanical properties and battery safety.

Assessment

This 20μm wet-process PE separator delivers exceptional puncture strength of 722g, making it suitable for lithium-rich manganese-based battery applications requiring mechanical robustness. However, its 135°C melting point and sensitivity to heat and moisture necessitate controlled storage and processing conditions.

Positive

Ultra high puncture strength: With a puncture strength of 722 g, this separator provides superior mechanical resistance against dendrite penetration and electrode particle intrusion, enhancing cell safety in lithium-rich manganese-based batteries.
Tailored for lithium-rich manganese chemistry: This separator is specifically formulated for lithium-rich manganese-based battery systems, ensuring compatible electrochemical stability and pore structure for optimal ionic transport and cycle life.

Trade-offs

Requires controlled storage environment: Must be sealed and stored in a cool, dry, ventilated area away from fire, heat sources, and direct sunlight to prevent moisture absorption, oxidation, or thermal degradation.
Low melting temperature limits thermal stability: A melting point of 135 °C restricts use in high-temperature battery operations or thermal runaway scenarios, as the separator may lose structural integrity above this threshold.

Quality Standards & Performance Verification

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.

Shipping & Returns

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).