Polytetrafluoroethylene composite isolation membrane for lithium battery
A polytetrafluoroethylene and polyethylene microporous film technology, applied in battery pack parts, circuits, electrical components, etc., can solve problems such as hidden dangers of lithium battery safety, poor thermal stability, and large shrinkage ratio, and achieve excellent mechanical properties. Performance, overall performance improvement, improved close-knit effect
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Embodiment 1
[0022] see figure 1 , The polytetrafluoroethylene composite separator for lithium batteries of the invention comprises a separator, the separator is a polyethylene microporous membrane 1, and the end face and both sides of the polyethylene microporous membrane 1 are covered with A polytetrafluoroethylene microporous membrane 3 is combined.
Embodiment 2
[0024] see figure 2 , The polytetrafluoroethylene composite separator for lithium batteries of the invention comprises a separator, the separator is a polypropylene microporous membrane 2, and the end face and both sides of the polypropylene microporous membrane 2 are covered with A polytetrafluoroethylene microporous membrane 3 is combined.
Embodiment 3
[0026] refer to image 3 , the polytetrafluoroethylene composite separator for lithium batteries of the invention comprises a separator, the separator is a composite membrane of the polyethylene microporous membrane 1 and the polypropylene microporous membrane 2, the The polyethylene microporous membrane 1 and the polypropylene microporous membrane 2 of the composite membrane are coated with a polytetrafluoroethylene micropore on the end face of the polyethylene microporous membrane 1 and on both sides of the composite membrane. film3.
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