PET Composite Copper Foil 240MPa Tensile Strength Battery Current Collector

Product Name: Composite Copper Foil

Model Number:AS-CCF

Brand Name: AS

Product Origin:China

Product description: Compared with traditional copper foil, PET substrate has good safety performance, light weight, and good ductility, which can help improve the energy density of batteries.

The AS-CCF composite foil combines 8μm ultra-thin PET substrate with 99.9% purity copper coating, delivering 240MPa tensile strength and 20MΩ anti-shorting resistance. Ideal for high-energy 4680 cells and solid-state batteries, it reduces thermal runaway risks by 70% vs traditional copper foils.

Product name		PET Composite Copper Foil
Testing items		Unit	Norm value	Testing standards and methods
Areal density		g/㎡	24±0.5	Sampler, balance

Width		mm	280	Steel ruler
Square resistance		MΩ	20±3	Four Probe Square Resistance Meter
Resistivity		Ω/m	≤4*10-8	Four Probe Square Resistance Meter
Plating purity		%	99.9	Metal Detector
Tensile Strength	MD	MPa	≥240	Tensile tester
	TD		≥240
Break elongation	MD	%	≥5%
	TD		≥5%
Wettability		Dyne value	≥32	Dyne pen
Antioxidant	150℃ 10min	/	No color change	Oven
	150℃ 10min		Not melt
Adhesion		/	Tape No. 681 does not fall off	3M tape
Pinholes		Number	No >500μm pinholes	Metallographic microscope
Appearance and storage conditions		The foil surface is smooth and flat; no interlayer folds; no indentation, bruises, scratches, uniform color, no corrosion, no oil stains, no black spots, smooth cut edges, and no obvious burrs. Storage temperature ≤25°C, temperature ≤65°C, avoid direct sunlight and chemical corrosion.

Company Profile

Xiamen AS battery equipment Technology Co LTD was set up as a manufacturer in 2006. We have total manufacturing facilities of around 4, 000 square meters and more than 65 staff. Owning a group of experienced engineers and staffs, we can bring you not only reliable products and technology, but also excellent services and real value you will expect and enjoy. AS Battery has been focused on product development and operations of lithium battery and its surrounding, we supply full kinds of lithium-ion battery equipment, lab battery raw materials and lithium-ion battery research and development technology.