Perforated Copper Foil

Perforated Copper Foil represents an innovative advancement in copper foil technology, offering unique benefits such as lightweight construction and exceptional flexibility. This material plays a crucial role in enhancing the specific energy and charge-discharge efficiency of lithium-ion batteries, positioning it as a promising candidate for widespread adoption in the lithium battery industry.

As a novel material, perforated copper foil demonstrates significant potential for improving battery performance. However, further research is needed to fully explore its capabilities in lithium battery applications. Key areas for improvement include enhancing its tensile strength, elongation, and oxidation resistance to meet the demanding requirements of advanced energy storage systems.

 

 

 

Items	Unit	Value
Copper	T2	99.99%
Perforated Cu foil Thickness	mm	0.012-0.1
Perforated Cu foil surface density	g/m2	Thickness *8.9*0.5
Foil width	mm	Customized
Edge width	mm	Customized
Hole size	mm	0.8-1.0
Hole pitch	mm	1.5-1.7
Porosity	%	40-50
Perforated Cu foil tensile strength	Mpa	156
Perforated Cu foil elongation rate	%	2.21
Perforated Cu foil resistivity	μΩ.cm	1.807
Wettability	Dyne value	38
Antioxidant (140 degrees for 15 minutes)	ok

 

 

• Chemical Etching: Offers the highest precision, suitable for complex micro-perforation arrays (apertures as small as 10μm). Allows controlled hole shapes (round, square, custom) with burr-free edges. This is the preferred process for high-end electronic products.
• Mechanical Punching: High efficiency and lower cost, ideal for thicker copper foils (>0.1mm) and larger apertures (typically >0.5mm) in mass production. Commonly used for shielding covers and heat dissipation substrates.
• Laser Drilling: Provides high flexibility for prototyping, small batches, or ultra-hard alloy copper foils. Delivers high aperture precision, though post-processing may be needed to address heat-affected zones.
• Electroforming: Used to produce ultra-high precision, extremely thin (<10μm) perforated copper foil with excellent pore wall verticality. Applied in precision sensors and high-end RF components.

 

Product Structure

The primer layer technology for carbon-coated copper foil (CCF) appears to address critical challenges in lithium-ion battery (LIB) anodes, particularly in improving interfacial contact, reducing stress from active material expansion, and protecting current collectors.

Working Method

Primer layer plays a critical role in enhancing the performance of carbon-coated copper foil (CCF) for lithium-ion battery(LIB) anodes. The primer acts as an interfacial bridge between the copper current collector and the anode active material (e.g., graphite, silicon).

 

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• Electrical Conductivity: Copper's high conductivity makes it ideal for electronic and electrical applications.
• Thermal Conductivity: Efficient heat dissipation is crucial in many industrial and electronic uses.
• Corrosion Resistance: Copper naturally resists corrosion, ensuring long-term durability.
• Flexibility: The foil remains malleable and easy to work with, even with perforations.
• Customizable Perforations: Hole size, shape, and pattern can be tailored to specific needs.

 

 

Electronics and EMI Shielding

• Used in printed circuit boards (PCBs) and flexible circuits where airflow or light transmission is needed.
• Acts as a shielding material against electromagnetic interference (EMI) while allowing ventilation.

Battery Technology

• Used as a current collector in batteries, where perforations can improve ion flow and reduce weight.

Filtration and Sieving

• Employed in filters or sieves for liquids or gases, leveraging copper's durability and corrosion resistance.

Decorative and Architectural Uses

• Used in decorative panels, lighting fixtures, and architectural designs due to its aesthetic appeal and functionality.

RFID and Antennas

• Perforated copper foil is used in RFID tags and antennas, where specific patterns enhance performance.

Heat Exchangers and Cooling Systems

• The perforations allow for improved airflow and heat dissipation in thermal management systems.

 

• Lightweight: The perforations reduce material usage, making the foil lighter without compromising strength.
• Enhanced Functionality: The holes allow for airflow, light transmission, or fluid passage, depending on the application.
• Customizability: Perforation patterns can be designed to meet specific technical or aesthetic requirements.
• Cost-Effective: Reduces material costs while maintaining performance.

 

 

• Hole Size and Pattern: The size, shape, and arrangement of perforations must be carefully designed to suit the application.
• Material Thickness: Thicker foils provide more durability but may reduce flexibility.
• Environmental Conditions: While copper is corrosion-resistant, harsh environments may require additional coatings or treatments.

 

 

• Round Holes: The most common pattern, used for general-purpose applications.
• Square or Rectangular Holes: Often used in filtration or decorative applications.
• Slotted Holes: Ideal for applications requiring directional airflow or fluid flow.
• Custom Designs: Unique patterns for specialized or aesthetic purposes.

 

 

 

 

 

 

Q1: What info. should I let you know if i would like to get a quotation for the the Electrolytic copper foil?

A1: The material size (Thickness*Width*Length and total Qty). If possible, it would be more better to advise the application of the product

Then we can recommend the most suitable products with details for confirmation.

 

Q2:How long is your delivery time?

A2:Generally it is 5-10 days base on we have stock on hand. or 15-20 days if no inventory, then need check with our production team for lead time according to the quantity.

 

Q3: Do you provide samples ?

A3:Yes, if standard sizes sample is free but buyer need to pay freight cost.

 

Q4:What is your terms of payment ?

A4: Normal payment term is 30%TT, 70% before shipment get ready to ship

 

Q5: How do you guarantee the quality of the products?

A5: Each step of production and finished products will be carried out inspection by QC department before storing to the warehouse. NG products are not allowed in the completed goods warehouse.

 

 

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