Al₂O₃ Coated PE Separator Dual‑Side 20μm 100m

$120.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

Dual-side Al2O3 coated PE battery separator, 20μm thick, 1000m × 60mm roll. Porosity 44%. Puncture ≥600G, thermal shrinkage ≤2.5%. In stock.

AL2O3 COATED PE SEPARATOR DUAL-SIDE 20UM 100M

RESEARCH GRADE MATERIAL

Product Overview

This premium battery separator roll features an advanced inorganic-organic composite architecture engineered exclusively for high-reliability automated lamination and continuous cell winding within next-generation lithium-ion battery configurations. By combining the exceptional mechanical toughness and flexural matrix of a polyethylene (PE) baseline film with the supreme dual-sided thermal insulation of a micro-calibrated, symmetrical Aluminum Oxide (Al2O3) cladding coating, this roll-form platform suppresses internal electronic cross-over. Tailored to withstand high engineering line tension without structural breakdown, it balances excellent electrolyte wetting kinetics with minimized shrinkage cross-sections, guaranteeing uncompromised validation data reproducibility across industrial pilot runs.

Technical Specifications

PARAMETER	DETAILS
1. Core Device & Device Root Substrate Designation
Material Configuration	Premium Polyethylene (PE) polymeric base film + symmetrical double-sided Alumina (Al2O3) ceramic layer coating
Available Delivery Form Factor	Continuous roll-only architecture (Optimized for automated pilot winding lines)
Roll Physical Sizing Profile	100 m Run Length × 60 mm Geometric Calibration Width
Packaging Enclosure Volumetrics	16 × 8 × 8 inches Continuous Shipping Standard Profile
2. Membrane & Porous Barrier Parameters
Total Multi-layer Thickness	20 ± 2 μm Total Thickness Cross-Section (Baseline PE thickness: 16 μm \| Symmetrical single-sided Al2O3 coating thickness: 2 μm)
Air Permeability Matrix (Gurley)	180 ± 60 s/100ml Porous Cross-Transmission Rate
Micro-Porous Porosity Rating	44 ± 5 % Open Core Ratio
Composite Surface Density	13.0 ± 1.0 g/m² Matrix Area Mass Weight
3. Mechanical, Thermal & Kinetic Transport Matrix
Puncture Deflection Strength	≥ 800 G Heavy Mechanical Load Threshold (Resists electrode burr protrusion and dendrite shorting)
Ultimate Mechanical Tensile Strength	Longitudinal Direction (MD): ≥ 1600 kgf/cm² \| Transverse Direction (TD): ≥ 1500 kgf/cm²
Extreme Thermal Shrinkage Profile	Longitudinal Direction (MD): ≤ 2.5% \| Transverse Direction (TD): ≤ 2.0% (Verified post continuous high-heat thermal validation stress)
Manufacturing Rules	Processed under strict ISO standard compliance protocols (ISO 10993, ASTM D882, ASTM D726, and IEC 61960 certified) conditions
Alternative Options	Engineered for high-end consumer hardware, automotive electric vehicle (EV), and industrial storage lines. For custom slitting widths, extended roll runs, or material quotes, please contact our support team.

Key Features & Advantages

Homogeneous Material Purity: Formulated via advanced symmetrical double-sided coating techniques to guarantee uncompromised interface integration, fusing ultra-stable alumina particles on both faces of the polymeric matrix to eliminate structural layer curling or peeling.
Enhanced Operational Efficiency: Specifically engineered with balanced multi-directional tensile parameters and an elite ≥ 800 G puncture barrier, avoiding internal shorting risks from micro-dendrites or collector burrs during fast automated winding.
Optimized Microstructure: Symmetrical double-coated geometry delivers isotropic thermal stress distribution and ultra-low thermal shrinkage, maintaining complete physical separation boundaries under elevated thermal validation loads.

APPLICATION SCOPE: High-end consumer hardware, automotive electric vehicle (EV), and industrial storage lines.

This separator roll is a composite film with precise dimensional tolerances that require controlled thermal exposure during use. The alumina coating provides thermal stability but is susceptible to shrinkage at elevated process temperatures.

Thermal Exposure Constraint: Do not expose the separator to temperatures above 90°C for extended durations to prevent unacceptable shrinkage exceeding 2.5% in the machine direction.
Mechanical Handling Precautions: Handle the roll with clean, non-abrasive tools to avoid puncturing or deforming the coated surface.

FAQ

How does the double-sided alumina coating layer thickness impact the balance between mechanical integrity and ionic transport in this battery separator?

The 2μm alumina coating on each side of the 16μm PE substrate yields a puncture strength ≥600G and tensile strength MD≥1600/TD≥1500 kgf/cm², while maintaining an air permeability of 180±60 s/100ml and porosity of 44±5%, ensuring adequate electrolyte wetting and lithium-ion migration for high-rate performance.

What specific cell formats and electrolyte chemistries are compatible with this alumina-coated PE separator?

This separator is designed for lithium-ion batteries and is compatible with standard carbonate-based electrolytes due to ISO 10993 chemical inertness compliance. It is supplied only in roll form (60mm width, 1000m length) and can be cut to size for pouch, prismatic, or cylindrical cells, with mechanical properties supporting automated winding.

What are the recommended handling and storage conditions to maintain the integrity of this double-sided alumina coated PE separator roll?

Store the roll in a dry, clean environment at ambient temperature to prevent moisture absorption that could degrade the PE substrate. The alumina coating is chemically inert per ISO 10993, but avoid exposure to UV and sharp objects to preserve the puncture strength ≥600G. The packaging (16x8x8 inches) is designed for standard shipment, and the roll should be handled with clean gloves to avoid contamination.

Assessment

The Atomfair double-sided Al2O3 coated PE separator offers balanced mechanical and thermal properties with precise dimensions, though its roll-only format and thermal shrinkage require careful handling during cell assembly.

Positive

Symmetrical alumina coating: Double-sided Al2O3 coating on PE substrate provides high-temperature resistance and prevents short circuits by eliminating direct contact between electrodes, enhancing battery safety.
Optimized pore structure: The air permeability of 180±60 s/100ml and 44±5% porosity ensure full electrolyte wetting, accelerating Li-ion transport and improving charge-discharge efficiency.

Trade-offs

Roll-only form: The separator is supplied exclusively in 1000m rolls, necessitating slitting or cutting to desired dimensions before integration into cell assembly lines.
Measurable thermal shrinkage: Thermal shrinkage of ≤2.5% MD and ≤2.0% TD at 90°C must be accounted for in cell drying processes to maintain separator alignment and electrode registration.

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 excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).