Method of making an electrochemical cell by the application of polysiloxane onto at least one of the cell components
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United States of America Patent
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Apr 15, 2003
Grant Date -
Sep 26, 2002
app pub date -
Jan 23, 2001
filing date -
Jan 23, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Lithium-ion electrochemical cells include an anode, a cathode and a separator between the anode and cathode, wherein at least one of the anode, cathode and separator includes a polysiloxane coating thereon. Most preferably, the polysiloxane coating is the polymerized reaction product of dimethyl siloxane and tetra(trimethylsiloxy) silane), and is present on the surface in an amount between about 0.05 to about 0.17 mg/cm.sup.2. After being coated with the polysiloxane adhesive, the electrodes and separator can easily be attached one to another at ambient temperature by application of pressure using a hand roller or with a laminator, and then subsequently formed into a spiral or stacked structure for placement in a battery cell case.
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