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Li-Ion Battery Separator

The Li-ion battery separator is a microporous film with a main matrix of polyolefine film that has been manufactured using a one or two step stretching in hole crafts, and ion pass through functions. Li-ion batteries are known for the separate poles of positive and negative to avoid short circuiting. Following the development of separator technology, new types of li-ion battery separators have developed, including the PP/PE/PP compound separator, and ceramic coating separator. Each is characterized by the resistance to high temperatures, and the PVDF coating separator has one of the best performances on the market.

Product Features
We provide a complete range of articles and products in different thickness levels and different physical properties based on customer requirements, including a high security and excellent heat shrinking performance, anti-stretching and anti-threading performances, excellent compatibility with electrolytes, high liquid absorption and protection rate, and finally, an excellent electrochemical performance.

Production Specification and Typical Performance Parameter
  • Li-ion Battery Separator Production Procedure
  • Li-ion Battery Separator half-product
  • Li-ion Battery Separator End-product
Li-ion Battery Separator Production Data
Model No. Thickness Porosity Heat-Shrinkage Gurley Puncture Strength
ND2038 USL 22 41 2.5 450 /
LSL 18 37 / 250 300
CpK 1.73 1.67 1.67 1.87 1.47
ND2538 USL 27 41 2.5 550 /
LSL 23 37 / 350 375
CpK 1.75 1.61 1.89 1.62 1.42
ND3240 USL 34 43 2.5 650 /
LSL 30 39 / 350 480
CpK 1.74 1.51 2.08 1.59 1.5
ND4040 USL 42 43 2.5 750 /
LSL 38 39 / 450 600
CpK 1.58 1.55 1.98 1.51 1.58
Li-ion Battery Separator Technology Data
Model ND0832 ND1038 ND1238 ND1438 ND1637 ND2038 ND2538 ND3240 ND4040
Thickness μm GB/T6672-2001 8 10 12 14 16 20 25 32 40
Gurley Value s/100cc JIS P8117 120 160 200 220 225 334 385 450 610
Porosity % Q/CMZ1-2010 32.5 38.2 38 37.5 38.5 38.5 39 40.9 40.3
Puncture Strength g Q/CMZ2-2010 180 200 228 300 302 375 482 534 627
Stretching Strength Kgf/cm2 GB/T1040[1].3-2006 1350 1328 1327 1520 1322 1260 1297 1311 1384
Heat Shrinkage % GB/T12027-2004 1.2 1.2 1.3 1.2 1.3 1.3 1.5 1.5 1.6
MD (90 ℃ , 2h)
Heat Shrinkage % GB/T12027-2004 0 0 0 0 0 0 0 0 0
TD (90 ℃ , 2h)
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