Separator for electrochemical cells

Details Separator for electrochemical cells Separator for electrochemical cells

1990-05-29

1992-02-25

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

With control means responsive to battery condition sensing...

Temperature control

429145, 427195, 427243, 4274301, H01M 216, B05D 500

Patent

active

050912720

ABSTRACT:
This invention relates to a heat sensitive polymer film and to a method for making the same. The film becomes substantially impermeable to air or ion flow above a predetermined temperature and is useful as a separator in electrochemical cells. The film comprises a microporous layer coated on at least one side with a layer of heat-fusible polymer particles.

REFERENCES:
patent: 2668787 (1954-02-01), Schramm
patent: 3186886 (1965-06-01), Etchison et al.
patent: 4075400 (1978-02-01), Fritts
patent: 4562094 (1985-12-01), Goebel et al.
patent: 4650730 (1987-03-01), Lundquist et al.
patent: 4731304 (1988-03-01), Lundquist et al.
patent: 4741979 (1988-05-01), Faust et al.
patent: 4973532 (1990-11-01), Tasker et al.

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