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ATOMFAIR® a roll of shiny metallic bronze copper foil on a core, displaying a smooth sheet extending flat onto a white surface.

6.5μm PET Composite Copper Foil ATOMFAIR®

$529.95

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.

Buy 6.5μm composite copper foil price deals for lightweight lithium battery current collector R&D. High safety PET double-sided copper foil 280mm width. Contact inquiry@atomfair.com.

Quantity Price
1 – 4 $529.95
5 – 9 $429.95
10+ $329.95
SKU: AACOCUCOMPA3A0
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Description

ATOMFAIR® 6.5ΜM PET COMPOSITE COPPER FOIL

RESEARCH GRADE CURRENT COLLECTOR

Product Overview
The ATOMFAIR® PET Composite Copper Foil is a premium research-grade double-sided copper-coated polymer current collector engineered for advanced lithium-ion battery anodes. Featuring a 6.5μm PET substrate with high-purity copper deposition (99.9%) on both surfaces, this lightweight current collector delivers exceptional energy density improvement while providing intrinsic thermal runaway protection through its polymer barrier mechanism. The material exhibits excellent mechanical strength with MD/TD tensile strength ≥ 240 MPa and elongation ≥ 5%, ensuring reliable high-speed coating, calendering, and slitting processes without web breakage. With stable electrical performance (sheet resistance 20±3 mΩ/□, resistivity ≤ 4×10⁻⁸ Ω/m) and superior wettability (≥ 32 dyn/cm), this composite foil ensures consistent active material adhesion and uniform current distribution. Available in 280mm width × 50m/roll packaging, the ATOMFAIR® PET composite copper foil supports advanced battery R&D from high-energy-density prototyping to safety-enhanced cell development. Competitive 6.5μm composite copper foil price points are available for both academic and industrial R&D procurement.

Technical Specifications

PARAMETER DETAILS
1. Core Material & Designation
Product Model PET Composite Copper Foil
Material Type PET polymer core with double-sided copper deposition
Application Lithium-ion battery anode current collector
Total Thickness 6.5 μm (+1 / -0)
Width 280 mm
Packaging 50 meters / roll
2. Physical & Electrical Properties
Areal Density 24 ± 0.5 g/m²
Sheet Resistance 20 ± 3 mΩ/□
Resistivity ≤ 4 × 10⁻⁸ Ω/m
Coating Purity 99.9% (copper deposition)
Wettability (Dyne Value) ≥ 32 dyn/cm
3. Mechanical Properties
Tensile Strength (MD) ≥ 240 MPa
Tensile Strength (TD) ≥ 240 MPa
Elongation at Break (MD) ≥ 5%
Elongation at Break (TD) ≥ 5%
4. Thermal Stability
Antioxidant Performance No discoloration or melting at 150°C / 10 min
Thermal Shutdown Mechanism PET substrate acts as intrinsic thermal barrier, prevents copper melting and short-circuit propagation
Manufacturing Standards Processed under strict ISO 9001 / Battery-grade compliance conditions
Alternative Options Explore our related current collector catalog or custom dimensions. For urgent technical custom requests or bulk 6.5μm composite copper foil price inquiries, please contact our support team.

Key Features & Advantages
  • Enhanced Battery Safety: PET polymer substrate provides intrinsic thermal runaway protection by acting as a barrier against copper melting and shrinkage during internal short circuits, significantly reducing fire and explosion risks.
  • Lightweight Design: 6.5μm composite structure with 24±0.5 g/m² areal density offers superior weight reduction compared to traditional electrolytic copper foils, directly improving battery gravimetric energy density.
  • Superior Mechanical Strength: Balanced MD/TD tensile strength ≥ 240 MPa with ≥ 5% elongation ensures stable processing during high-speed coating, calendering, and slitting operations without web breakage.
  • Excellent Electrical Performance: High-purity copper deposition (99.9%) with sheet resistance of 20±3 mΩ/□ and resistivity ≤ 4×10⁻⁸ Ω/m ensures consistent current collection and uniform charge/discharge distribution.
  • Process-Ready Surface Quality: Optimized wettability (≥ 32 dyn/cm) and thermal stability (no discoloration at 150°C/10min) ensure reliable active material coating and long-term battery performance.

APPLICATION SCOPE: Lithium-ion battery anode current collector R&D, high-energy-density battery prototyping, thermal runaway prevention studies, lightweight battery development, flexible battery research, anode coating optimization, high-speed electrode manufacturing trials, and academic research on advanced battery materials and safety mechanisms.
PACKAGING: 50 meters per roll with protective core and anti-static packaging. Shrink-wrapped with cushion padding to prevent mechanical damage and surface contamination during transit.
IMPORTANT NOTICE: PET composite copper foil is sensitive to mechanical stress, edge damage, and surface contamination. Handle with clean gloves and avoid contact with sharp edges during roll handling and slitting operations. Store in a dry, clean environment at room temperature, away from moisture, dust, and corrosive atmospheres. Prior to electrode coating, surface cleaning with appropriate solvents may be beneficial to remove any residual contamination. For optimal battery performance, match active material particle size with foil surface characteristics and optimize coating parameters (doctor blade gap, drying temperature, calendering pressure) accordingly. Avoid excessive bending or creasing which may cause copper layer cracking. For custom width requirements or longer roll lengths, please contact our engineering team for feasibility assessment. Proper handling and storage ensure long-term material integrity and consistent battery performance.
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFair

The foil must be stored in a cool, dry environment to prevent degradation and ensure material integrity. Optimal adhesion of active materials requires a clean, contamination-free PET surface prior to coating.

  • Storage Environment: Store the foil in a cool, dry environment with stable temperature and low humidity to avoid moisture absorption and material degradation.
  • Thermal Stability: Avoid exposing the foil to temperatures exceeding the PET layer's rated thermal stability to prevent deformation or delamination during processing or operation.
  • Surface Adhesion: Maintain a clean, dust-free PET surface before applying active material coatings to ensure strong adhesion and prevent failure modes such as delamination.
  • Mechanical Handling: Handle the foil carefully to avoid creasing, tearing, or puncturing the thin copper layer, which could compromise current collector functionality.

How does the PET composite copper foil achieve weight reduction without compromising electrical conductivity?

The composite design uses a thin copper layer on a PET backing, significantly reducing overall density compared to pure copper foil of equivalent mechanical strength. The copper layer maintains high electrical conductivity suitable for advanced battery applications, while the lightweight PET provides structural support and flexibility. This trade-off enables lighter anode substrates for electric vehicles and portable electronics.

What types of anode active materials are best suited for deposition on this PET composite copper foil?

The PET surface is engineered for enhanced adhesion of common lithium-ion battery anode active materials such as graphite, silicon, and lithium metal. The improved adhesion enhances electrochemical performance and cycle life. For specialized material systems, customizable surface treatments may be arranged by contacting the supplier.

What are the critical storage conditions required to prevent degradation of PET composite copper foil?

The foil must be stored in a cool, dry environment to prevent oxidation of the copper layer and deformation of the PET backing. High humidity or extreme temperatures can cause corrosion or dimensional changes. Proper storage ensures the composite structure retains its mechanical integrity and conductivity for reliable battery performance.

This PET composite copper foil provides a lightweight, flexible anode substrate with high electrical conductivity and enhanced active material adhesion, but requires controlled storage environments and is optimized exclusively for lithium-ion battery applications.

Positive

  • Composite structure advantages: The PET backing delivers flexibility and mechanical strength, while the copper layer ensures high electrical conductivity, collectively enhancing battery performance.
  • Enhanced active material adhesion: The PET surface promotes superior adhesion of active materials, leading to improved electrochemical performance and extended cycle life.

Trade-offs

  • Controlled storage required: The material must be kept in a cool, dry environment to prevent degradation, imposing specific storage infrastructure needs.
  • Restricted to lithium-ion anodes: Designed exclusively as an anode substrate for lithium-ion batteries; not validated for other battery chemistries or electrochemical systems.

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).

Additional information

Weight 1.5 kg
Dimensions 20 × 20 × 30 cm

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