Home > Li-ion Battery Material

Lithium Battery Separator Polypropylene PP Film Battery Membranes

Lithium Battery Separator Polypropylene PP Film Battery Membranes

Model: Battery Separator
Material: Polypropylene Membrane
Thickness: 16um 20um 25um
Delivery Time: 3 days
Product description: In the structure of the lithium battery, separator is one of the key component. The properties of the separator determines of interface structure, resistance of battery,directly influencing the capaci
INQUIRY

Lithium Battery PP Separator Polypropylene Membranes for Lab

In the structure of the lithium battery, separator is one of the key component. The properties of the separator determines of interface structure, resistance of battery,directly influencing the capacitance, circulation,safety and other properties. High performance separator is very important to improve the comprehensive performance of the lithium battery.

The main function of the separator is to separate the positive and negative pole, in case of the short-circuiting due to the contact of the two poles. Furthermore, it also help the electrolyte pass through. The material of the separator is non-conductive. Its physical and chemical properties have a great impact on battery performance.The separator will be different according to types of batteries. For Lithium battery series, the electrolyte is an organic solvent system,which is requires a solvent resistance separator material,generally using high strength porous polyolefin film.

20um Separator

Term	Unit	Inspection value
Appearance		Ivory-white
Thickness	micron	20±2
Gas permeability	Sec/100ml	350-550
Porosity	%	38-44
Puncturing Strength	g	>300
Tensile strength MD	Mpa	>90
Tensile strength TD	Mpa	>100
Film close temperature	℃	≤135
Film break temperature	℃	≥147
90℃ heat shrink MD	%	≤3.5
90℃ heat shrink TD	%	≤2
105℃ heat shrink MD	%	≤5
105℃ heat shrink TD	%	≤3
120℃ heat shrink MD	%	≤20
120℃ heat shrink TD	%	≤15

25um Separator

Name		PP(polypropylene) Separator
Item		Unit	Type
Item		Unit	PP-25
Thickness		um	25
Air Permeability		sec/100ml	520
Factor of porosity		%	42
Tensile Strength	MD	Kg/cm2	>1200
Tensile Strength	TD	Kg/cm2	>130
Puncture Strength		g	>450
Thermal contraction (90℃ 1h)	MD	%	≤2.5
Thermal contraction (90℃ 1h)	TD	%	≤0.5
Thermal contraction (105℃ 1h)	MD	%	≤4
Thermal contraction (105℃ 1h)	TD	%	≤1
Obturator temperature		℃	153