Process of manufacturing porous separator for electrochemical power supply
First Claim
1. A process for fabricating a porous composite separator for an electrochemical cell which includes an electrode, comprising the steps of:
- disposing a solution of separator precursor on said electrode wherein said solution comprises a solid particulate material and a chlorinated polyolefin binder; and
transforming said solution of separator precursor so that said solution of separator precursor forms a porous composite separator that adheres to said electrode.
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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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Citations
9 Claims
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1. A process for fabricating a porous composite separator for an electrochemical cell which includes an electrode, comprising the steps of:
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disposing a solution of separator precursor on said electrode wherein said solution comprises a solid particulate material and a chlorinated polyolefin binder; and transforming said solution of separator precursor so that said solution of separator precursor forms a porous composite separator that adheres to said electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification