Coatings for electrochemical electrodes and methods of...

Details Coatings for electrochemical electrodes and methods of... Coatings for electrochemical electrodes and methods of...

H - Electricity

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319/80

H01M 4/58 (2006.01) H01M 4/02 (2006.01) H01M 4/24 (2006.01) H01M 6/14 (2006.01) H01M 10/36 (2006.01) H01M 2/16 (2006.01) H01M 4/36 (2006.01) H01M 4/38 (2006.01) H01M 4/66 (2006.01)

Patent

CA 1237767

ABSTRACT The present invention provides a coating for electrodes for use in electrochemical cells having an electrochemically active species and an elec- trolyte. The coating includes a selectively per- meable material which allows for the diffusion of the active species through the coating during op- eration of the cell while providing a substan- tially impervious barrier to the electrolyte. Electrodes utilizing the coatings described herein may be used in primary and secondary cells over a wide range of operating temperatures to deliver better electrochemical performance even at room temperature. Methods of making the coating and an apparatus for performing these methods on a con- tinuous basis are included in the present inven- tion. A novel composition of matter also is con- templated containing lithium, silicon, and fluo- rine prepared by exposing lithium metal to SiF4.

457588

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