SULFIDE COATINGS ENABLING ULTRA-STABLE CATHODES OF BATTERIES

The invention relates to a cathode that includes one or more sulfide-based layers positioned on a surface of the cathode, where the sulfide-based layer includes a plurality of stacked layers. The invention also relates to an energy storage device that includes such cathodes. The invention also relates to methods of forming a coated cathode by depositing one or more sulfide-based layers onto a surface of the cathode.