Composite coating for electrochemical electrode an

专利名称：Composite coating for electrochemical

electrode and method

发明人：John P. de Neufville,Dalbir Rajoria,Stanford

R. Ovshinsky

申请号：US06/872730申请日：19860610公开号：US04707422A公开日：19871117

摘要：The present invention provides a coating for electrodes for use in

electrochemical cells having an electrochemically active species and an electrolyte. Thecoating contains active species material and is selectively permeable allowing for thediffusion of the active species through the coating during operation of the cell whileproviding a substantially impervious barrier to the electrolyte. The coating optionallyfurther includes a polymer layer over the active species containing coating or layer formaintaining the mechanical integrity of the active species layer.

Electrodes utilizing the coatings described herein may be used in primary andsecondary cells over a wide range of operating temperatures to deliver betterelectrochemical performance even at room temperature.

Methods of making the coating and an apparatus for performing these methods on acontinuous basis are disclosed.

A novel composition of matter is disclosed comprising lithium, silicon, and fluorineprepared by exposing lithium metal to SiF.sub.4.

申请人：VOLTAIX, INC.

代理机构：Jenner & Block

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