Description

ATOMFAIR® Φ19MM PP/PE BATTERY SEPARATOR DISC

RESEARCH GRADE COIN-CELL SEPARATOR

Product Overview

The ATOMFAIR® PP/PE Battery Separator Disc is a premium research-grade pre-cut separator specifically engineered for lithium-ion and sodium-ion coin-cell battery testing. Featuring a precisely stamped Φ19mm diameter format, this separator is perfectly compatible with CR series coin cells (CR2032, CR2025, etc.), eliminating the need for manual cutting and ensuring consistent experimental reproducibility. The material delivers exceptional microporous characteristics with 44% ± 5% porosity and 230±60 s/100ml Gurley value, facilitating rapid electrolyte wetting and efficient lithium/sodium-ion transport. With outstanding mechanical properties including puncture strength ≥ 600g and tensile strength exceeding 1600 Kgf/cm² (MD), this separator reliably prevents internal short circuits during electrode stacking and cell crimping. Low thermal shrinkage (≤ 2.5% MD, ≤ 1.0% TD at 90°C/2h) ensures dimensional stability under operating conditions. Available in convenient 100 pieces per box packaging, the ATOMFAIR® separator disc supports efficient and reproducible coin-cell R&D workflows. Competitive coin cell separator disc price points are available for both academic and industrial research procurement.

Technical Specifications

PARAMETER	DETAILS
1. Core Product Identification
Product Model	PP/PE Battery Separator Disc
Product Code	04007702
Material	PE (Polyethylene) / PP (Polypropylene) microporous membrane
Diameter	Φ19 mm (pre-cut, ready to use)
Packaging	100 pieces / box
2. Physical Properties
Thickness	20 ± 2 μm
Areal Density	10.6 ± 3 g/m²
Porosity	44% ± 5%
Gurley Value (Air Permeability)	230 ± 60 s/100ml
3. Mechanical Properties
Puncture Strength	≥ 600 g
Tensile Strength (MD)	≥ 1600 Kgf/cm²
Tensile Strength (TD)	≥ 1400 Kgf/cm²
4. Thermal Stability (90°C / 2 hours)
Thermal Shrinkage (MD)	≤ 2.5%
Thermal Shrinkage (TD)	≤ 1.0%
Manufacturing Standards	Processed under strict ISO 9001 / Battery-grade compliance conditions
Alternative Options	Explore our related separator catalog or custom diameters. For urgent technical custom requests or bulk coin cell separator disc price inquiries, please contact our support team.

Key Features & Advantages

Pre-Cut Ready-to-Use Format: Precision-stamped Φ19mm discs eliminate manual cutting variability, ensuring consistent edge quality and dimensional accuracy for reproducible coin-cell assembly across CR series (CR2032, CR2025, etc.).
Optimized Microporous Structure: Balanced porosity (44% ± 5%) and Gurley value (230±60 s/100ml) deliver rapid electrolyte wetting and efficient ion transport, supporting reliable electrochemical testing of Li-ion and Na-ion coin cells.
Superior Mechanical Robustness: High puncture strength (≥600g) and excellent tensile strength (MD ≥1600 Kgf/cm², TD ≥1400 Kgf/cm²) ensure reliable short-circuit prevention during electrode stacking, crimping, and testing.
Excellent Thermal Dimensional Stability: Low thermal shrinkage at 90°C/2h (MD ≤2.5%, TD ≤1.0%) maintains separator integrity and pore structure under operating temperatures, enhancing cell safety and cycle life.
Convenient Laboratory Packaging: 100 pieces per box format with protective packaging ensures clean, contamination-free storage and efficient material management for high-throughput coin-cell testing.

APPLICATION SCOPE: Lithium-ion coin-cell (CR2032, CR2025, CR2016) assembly, sodium-ion coin-cell research, electrochemical performance testing (cycling, rate capability, EIS), separator material screening, electrode-separator compatibility studies, academic battery research, industrial QC testing, and educational laboratory demonstrations.

PACKAGING: 100 pieces per box with protective anti-static interleaving. Each disc is individually separated to prevent surface damage or contamination during storage and handling. Sealed packaging ensures cleanliness prior to first use.

IMPORTANT NOTICE: PP/PE separator discs are sensitive to mechanical stress, moisture, and static electricity. Handle with clean tweezers and avoid direct finger contact to prevent contamination from skin oils. Store in a cool, dry environment away from direct sunlight and sources of static charge. Prior to coin-cell assembly, vacuum-drying at 60-80°C for 4-8 hours is recommended to remove residual moisture and ensure optimal electrolyte wetting. When assembling coin cells, ensure the separator disc is properly centered between electrode discs to prevent edge short circuits. For best performance, use compatible electrolytes (e.g., LiPF₆ in EC/DMC/EMC for Li-ion, NaPF₆ in EC/DEC for Na-ion) and ensure sufficient electrolyte volume for complete disc wetting. Always check disc integrity for any physical damage before cell assembly. Avoid creasing, folding, or sharp-edge contact which may compromise separator performance. Proper handling and storage ensure reliable and reproducible coin-cell testing results.

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 polyethylene film is engineered for use in CR20XX button battery assembly and requires handling within an inert atmosphere. The material's performance depends on strict control of humidity and particulate contamination during deployment.

Atmosphere Requirement: The film must be handled inside an argon-filled glove box to prevent oxidation of battery components.
Humidity Limit: The ambient relative humidity must be maintained below 2% RH to avoid moisture interference with electrochemical reactions.
Dust-Free Environment: The operating environment must be free of dust and particulates to prevent contamination during battery assembly.
Battery Compatibility: This pre-cut film is specifically designed for CR20XX series button batteries and may not fit other cell formats.

HowTo

Proper deployment of this film requires a controlled environment to maintain its integrity and battery performance. Follow these steps to ensure contamination-free assembly.

Required Equipment: Argon-filled glove box

Transfer to Glove Box
Transfer the unopened package containing the pre-cut polyethylene film into an argon-filled glove box.
Check Humidity
Confirm the ambient relative humidity inside the glove box is below 2% RH before opening the package.
Inspect Workspace
Inspect the workspace for dust and remove any particulates before opening the film package.

FAQ

How does the 44±5% porosity of Atomfair's pre-cut PE film influence the trade-off between electrolyte wetting rate and mechanical puncture resistance in CR20XX button cell assembly?

The 44±5% porosity provides a balanced porous structure that facilitates electrolyte wetting and ion transport while maintaining a puncture strength of ≥600G and tensile strengths of MD ≥1600kgf/cm² and TD ≥1400kgf/cm². This combination ensures both efficient ion exchange and structural integrity during assembly and cycling.

Is Atomfair's pre-cut polyethylene film compatible with CR20XX button batteries using lithium metal anodes or carbonate-based electrolytes?

Yes, the chemically inert polyethylene material does not react with most battery electrolytes, including common carbonate-based systems, and its stable structure supports testing with lithium metal anodes. The product requires use in an argon-filled glove box with humidity below 2% RH to prevent electrode and electrolyte degradation.

What controlled environment conditions are required when unpacking Atomfair's PE film for CR20XX button battery assembly?

The film must be unpacked and handled exclusively in an argon-filled glove box with ambient humidity maintained below 2% RH in a dust-free environment. These conditions prevent oxidation of electrode materials, moisture interference with electrochemical reactions, and particle contamination, in alignment with standard research-level battery testing protocols.

Assessment

This pre-cut PE separator delivers consistent 20±2 µm thickness and 44±5% porosity for reliable ion transport and >600 g puncture strength for mechanical durability in CR20XX coin cells, but mandatory use in an argon glove box with <2% RH and CR20XX-specific geometry constrain deployment flexibility.

Positive

Precision material isolation: Uniform porosity (44±5%) and thickness (20±2 µm) prevent electrode contact and short circuits while enabling stable ion exchange for accurate electrochemical testing.
Superior mechanical strength: Puncture strength ≥600 G and balanced MD/TD tensile strength (≥1600/1400 kgf/cm²) resist mechanical damage during assembly, cycling, and disassembly, preserving structural integrity.

Trade-offs

Controlled environment mandatory: Unpacking and use require an argon-filled glove box, <2% RH humidity, and a dust-free environment to prevent oxidation, moisture interference, and particle contamination.
CR20XX-specific pre-cut format: The film is precision-cut exclusively for CR20XX series button batteries, limiting its application to that specific coin cell geometry and form factor.

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).