Separator for electrochemical cells

Details Separator for electrochemical cells Separator for electrochemical cells

1987-07-17

1988-12-27

Hearn, Brian E.

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

429254, H01M 400, H01M 216

Patent

active

047940573

ABSTRACT:
This invention relates to a separator for non-aqueous electrochemical cells and in particular lithium/manganese dioxide cells. It has been discovered that a polypropylene microporous film having a thickness greater than one mil and voids greater than 50% by volume, has beneficial properties without the concomitant problems generally associated with separators having open structures.

REFERENCES:
patent: 3684580 (1972-08-01), Lysaght
patent: 4221123 (1980-09-01), Bucci et al.
patent: 4327157 (1982-04-01), Himy et al.
patent: 4333994 (1982-06-01), Urry
patent: 4550064 (1985-10-01), Yen et al.

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