Separator for nonaqueous electrochemical cells

Details Separator for nonaqueous electrochemical cells Separator for nonaqueous electrochemical cells

1997-06-02

1999-05-11

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer or spacer insulating structure

429249, 429250, 4292181, 429221, 429224, H01M2/16

Patent

active

059026960

ABSTRACT:
A combination separator comprising a single layer of a non-woven, polyolefinic cloth superposed with a single layer of a polyolefinic, microporous film for use in an electrochemical cell, is described. A preferred polyolefinic material for both the non-woven cloth and the microporous film is polypropylene. The redundancy of using two layers of separator is an enhanced safety characteristic of the cell; however, the use of the polypropylene web/film combination adds another dimension to the cell's safety characteristics by imparting the benefits of each type of material.

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