Preparation of polymer-impregnated battery separator material and cell made therewith
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United States of America Patent
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Nov 29, 1994
Grant Date -
N/A
app pub date -
Mar 21, 1994
filing date -
Mar 21, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrochemical cell (56) is made by furnishing an anode (52) and a cathode (54), preparing a separator (58), and placing the separator (58) between the anode (52) and the cathode (54). The separator (58) is prepared by furnishing a sheet of a porous separator substrate (40), preparing a solution of a water insoluble polymer in an organic solvent, spraying the solution onto both sides of the separator substrate (40), spraying water onto both sides of the separator substrate (40), and drying the separator substrate (40).
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