Description
ATOMFAIR® PRE-CUT POLYPROPYLENE FILM (BUTTON BATTERY MATRIX)RESEARCH GRADE MATERIAL
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TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official quotations.
EMAIL: INQUIRY@ATOMFAIR.COM
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Manufacturer: ATOMFAIR LLC
Brand: ATOMFAIR®
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This document specifies the dimensional, mechanical, and thermal constraints for the polypropylene separator disc used in CR20XX button battery assembly. Adherence to these constraints ensures proper isolation and performance in research-grade battery experiments.
- Thickness Tolerance: Thickness must be maintained within 16±1.5 μm to ensure consistent electrode spacing and prevent short circuits.
- Porosity Range: Porosity must be controlled within 35±4% to guarantee adequate electrolyte wetting and ionic conductivity.
- Thermal Shrinkage Limits: Thermal shrinkage after 1 hour at 120 °C must not exceed 0.5% in the transverse direction and 8.0% in the machine direction to avoid separator wrinkling.
- Puncture Strength Requirement: Puncture strength must be at least 220 G to resist penetration by electrode particles and maintain electrical isolation.
- Tensile Strength Requirements: Tensile strength must be ≥1200 kgf/cm² in the machine direction and ≥100 kgf/cm² in the transverse direction to withstand winding and handling forces.
How does the 16±1.5 μm thickness and 35±4% porosity of this pre-cut polypropylene disc balance ion transport with mechanical integrity in CR20XX button cells?
The 16±1.5 μm thickness and 35±4% porosity provide an optimal trade-off: the uniform porosity ensures stable ion exchange between electrodes while the thin profile minimizes electrolyte volume resistance, yet the high puncture strength (≥220G) and directional tensile strengths (MD ≥1200 kgf/cm², TD ≥100 kgf/cm²) prevent tearing or puncture during assembly and disassembly, maintaining structural integrity under mechanical stress.
Can this pre-cut polypropylene disc be used with lithium metal anodes or solid-state electrolytes in CR20XX coin cells?
This polypropylene disc is chemically inert to most conventional liquid electrolytes per ISO 10993 specifications and is designed for research on new electrode materials and electrolyte compatibility in CR20XX button batteries; however, it is optimized for liquid electrolyte systems and may not maintain proper interfacial contact or ion conduction in solid-state electrolyte configurations, which require different separator architectures.
What environmental conditions are mandatory for handling this pre-cut polypropylene disc to prevent contamination and ensure reproducible battery testing?
To avoid contamination and moisture interference, the disc must be unpacked and used in an argon-filled glove box with ambient humidity below 2% RH and a dust-free environment, as specified in the product's strict operating requirements to prevent oxidation of sensitive battery components and particle contamination that could skew electrochemical measurements.
This precision pre-cut polypropylene disc offers consistent 16±1.5μm thickness and 35±4% porosity for stable electrode isolation in CR20XX button cells, with low thermal shrinkage and high puncture strength. Its deployment requires stringent environmental controls (argon glove box, <2% RH humidity, dust-free) and is limited to the CR20XX format.
Positive
- Precise material isolation: Uniform porosity and thickness prevent electrode-electrolyte short circuits while enabling stable ion exchange, critical for accurate electrochemical testing.
- Thermal and mechanical robustness: Low TD shrinkage (≤0.5% at 120°C), high puncture strength (≥220G), and anisotropic tensile strength (MD ≥1200 kgf/cm²) resist deformation during assembly and cycling.
Trade-offs
- Strict environmental controls required: Must be unpacked and used inside an argon glove box with relative humidity below 2% and a dust-free atmosphere to prevent oxidation, moisture interference, and particle contamination.
- Limited to CR20XX button cell format: Pre-cut specifically for CR20XX series button batteries; cannot be used in other battery formats without custom sizing requests.
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).
