Cell Lab PET Composite Copper Foil [Cu/PET/Cu, 280 mm Width, 6.5 µm Thickness, 50 m/roll]

Cell Lab PET Composite Copper Foil [Cu/PET/Cu, 280 mm Width, 6.5 µm Thickness, 50 m/roll]

Lightweight, flexible copper composite for next-generation current collectors

The Cell Lab PET Composite Copper Foil (Cu/PET/Cu) is an advanced multilayer conductor combining the superior electrical and thermal properties of copper with the lightweight flexibility of PET film. This composite structure delivers exceptional mechanical stability, uniform conductivity, and reliable thermal performance—making it ideal for next-generation batteries, flexible electronics, and automotive energy systems.

With its sandwich configuration of Cu/PET/Cu, this foil provides a perfect balance between strength, conductivity and formability. It supports various electrode fabrication methods and offers customisable dimensions, surface finishes and layer thicknesses for tailored R&D and pilot-scale applications.

Key Features

• Composite Cu/PET/Cu Design – Combines high conductivity with mechanical reinforcement and flexibility.

• Low Electrical Resistivity – Provides stable current flow and uniform potential distribution across electrodes.

• High Tensile Strength – Maintains dimensional stability during winding, coating, and assembly.

• Lightweight & Thermally Stable – Suitable for compact, high-energy battery systems and electronic packaging.

• Customisable Structure – Layer thickness, width and surface treatment available upon request for R&D use.

Applications & Industries

• Lithium-ion and solid-state battery R&D

• Flexible and wearable energy devices

• Electric vehicle power modules

• Electronic packaging and EMI shielding

• Lightweight energy-storage materials research

FAQ

Q1: What advantages does the PET layer provide?
A1: It adds mechanical flexibility, electrical insulation, and structural stability without compromising conductivity.

Q2: Can this foil be customised for different electrode systems?
A2: Yes. Thickness, width and copper surface treatment can be tailored to match specific electrode or collector requirements.

Q3: How does it perform under high temperature?
A3: The PET core maintains stability under moderate thermal loads, while copper layers offer excellent heat dissipation.

Q4: Is this foil suitable for flexible batteries or printed electronics?
A4: Absolutely. Its composite structure supports bending and roll-to-roll processing in flexible energy devices.

Q5: What is the typical purity of the copper layers?
A5: Each copper layer has a plating purity of ≥99.9 %, ensuring consistent electrical performance.