Rechargeable lithium-ion battery cells and methods of making the same
First Claim
1. A lithium-ion electrochemical cell comprising an anode, a cathode and a separator between said anode and cathode, wherein at least one surface of said anode, cathode and separator includes a coating comprising a polysiloxane adhesive.
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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/cm2. 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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Citations
18 Claims
- 1. A lithium-ion electrochemical cell comprising an anode, a cathode and a separator between said anode and cathode, wherein at least one surface of said anode, cathode and separator includes a coating comprising a polysiloxane adhesive.
- 10. A method of making an electrochemical cell comprising the steps of (i) applying a polysiloxane adhesive onto a surface of at least one of an anode, a cathode and a separator, and thereafter (ii) stacking the anode, separator and anode in that order so as to laminate one to another.
Specification