Shutdown, bilayer battery separator

Details Shutdown, bilayer battery separator Shutdown, bilayer battery separator

1994-12-02

1996-10-15

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With control means responsive to battery condition sensing...

Temperature control

429145, H01M 218

Patent

active

055652816

ABSTRACT:
The present invention is directed to a shutdown, bilayer battery separator and a process for making the same. A first microporous membrane with shutdown capability and a second microporous membrane with strength capability are joined together in face-to-face contact. The face of the first membrane being adhered by calendaring, adhesives, or welding, to the face of the second membrane, and the separator having a thickness of less than 3 mils, and a puncture strength, as measured from the second microporous membrane, of greater than 1900 g-mm, and a peel strength of greater than 1 grams/centimeter.

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