Process for making a separator for an electrochemical device

Details Process for making a separator for an electrochemical device Process for making a separator for an electrochemical device

1987-08-27

1989-07-18

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

15624411, 264 41, 264 49, 264154, 2642888, 429249, C08J 928, C08J 926, B29C 4706

Patent

active

048491446

ABSTRACT:
A polymeric component, for use as a separator in an electrochemical device in which the anode comprises metallic lithium, comprises a thermoplastic polymer, a tertiary plasticizer and a filler that comprises a lithium compound which is substantially insoluble in both the polymer and the plasticizer. The component is rendered porous by deformation which increases its surface area. The porosity can be enhanced by extracting one or both of the plasticizer and the filler.

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