5μm Lithium Battery PE Separator

Product Name: WS-05 Wet-process PE separator

Model Number:AS-WS-05

Brand Name: AS

Product Origin:China

Product description: The 5μm separator combines 38% porosity, 320gf puncture resistance, and 3400kgf/cm² tensile strength, enabling 4C fast charging while reducing thermal shrinkage to ≤1.5%. Ideal for NCM811/LFP batteries, it extends cycle life by 30% vs standard separators.

The PE separator for lithium batteries is made of polyethylene material and features a micro-porous structure. It can isolate the positive and negative electrodes to prevent short circuits while allowing lithium ions to pass through. It features excellent chemical stability, mechanical strength and high-temperature resistance (melting point approximately 105℃), and is commonly used as a single-layer film or in combination with PP (such as a three-layer structure of PP/PE/PP) to enhance puncture strength and thermal stability. It is widely used in power and energy storage batteries. Through the biaxial stretching process, the pore size and porosity are controlled to ensure the battery's cycle life and safety.

Index		Spec	5um
		Model	AS-WS-05
		Unit	Standard	Typical
Thickness (um)		um	[4.0,6.0]	5.2
Air permeability		s/100ml	[70,170]	115
Porosity of the base film (%)		%	[33,43]	38.0
Surface density		g/m²	[2.0,4.0]	3.0
Puncture strength		gf	≥260	320
Tensile strength (kgf/cm ²)	MD	Kgf/cm²	≥2500	3400
Tensile strength (kgf/cm ²)	TD	Kgf/cm²	≥1200	2000
Ductility	MD	%	≥10	45
Ductility	TD	%	≥20	60
Hot-shrinkage rate	MD	%	≤4.0	1.5
Hot-shrinkage rate	TD	%	≤4.0	1.3
Outer packaging		The inner part is sealed in a transparent white sealed plastic bag. The pallets and central paper tubes are suspended and fixed. The outer part is packed in a cardboard box. The outer box is marked with the model, quantity, shipping date, etc.

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.