Process of manufacturing porous separator for electrochemical po

Details Process of manufacturing porous separator for electrochemical po Process of manufacturing porous separator for electrochemical po

1999-03-31

2000-11-21

Nuzzolillo, Maria

Metal working

Method of mechanical manufacture

Electrical device making

296234, 429247, 429249, 429252, H01M 600

Patent

active

061485039

ABSTRACT:
A method of forming a porous composite separator layer for an electrochemical cell comprising the steps of printing a thin layer of a separator precursor solution on the surface of one of the electrochemical cell electrodes, curing the thin layer of separator precursor solution so that it transforms into a microporous composite separator structure. In the preferred embodiment, the separator precursor solution is formulated as an ink comprising a silica aerogel filler material dispersed in a solution of chlorinated polyolefin binder which is dissolved in a suitable solvent. The process allows the manufacture of thin and flexible composite separators which are conformally bonded to the underlying electrodes.

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