Product Features – PI film is used in solid-state batteries

High and low temperature resistance: operating temperature range -160℃-350℃;
High safety: The physical adhesion between fibers forms an effective rigid support structure, and the structure is stable after gel electrolyte filling. In abnormal use environments such as needle puncture and impact, it ensures that the battery does not burn or explode, greatly improving safety;
High porosity: 3D microporous structure is intelligently adjustable to match different technical requirements of customers.

Product Specifications:

Test items	Unit	Test Results
Thickness	μm	19.1
Weight	g/m²	6
Density	g/cm³	0.320
Tensile strength (MD)	MPa	41.04
Tensile strength (TD)	MPa	12.36
Elongation at break (MD)	%	20.61
Elongation at break (TD)	%	100.91
Maximum force (MD)	N/15mm	14.92
Maximum force (TD)	N/15mm	4.62
Needle puncture strength	N	2.36
Porosity	%	76.54
Aperture distribution	μm	2.402-3.044
Main pore size	μm	2.832
Air permeability	S	0.06 (0.35 bar) (97.11 L/min)
Voltage resistance	V	450