1. A method of making a glass embedded electrode assembly, the method comprising: i) providing a porous electroactive network comprising cathode active material; ii) coating the electroactive network surfaces with a protective nanofilm that covers the cathode active material surfaces; iii) impregnating the pores of the electroactive network with particles of Li ion conducting sulfide glass to form a glassy electroactive prepreg; and heating the prepreg to cause the glass particles to viscously sinter to each other and form a continuous a glassy medium interpenetrating with the electroactive network.
