Treating sulfide glass surfaces and making solid state laminate electrode assemblies

Abstract

Methods for making solid-state laminate electrode assemblies include methods of forming a solid electrolyte interphase (SEI) by ion implanting nitrogen and/or phosphorous into the glass surface by ion implantation.

1 - 11 . (canceled) 
     
     
         12 . A battery cell, comprising:
 an anode;   a cathode; and   a solid-state laminate electrode assembly, comprising:   a lithium ion conducting sulfide glass substrate, the substrate comprising a sulfide glass solid electrolyte sheet having room temperature Li ion conductivity of at least 10 −5  S/cm, the sulfide glass substrate having first and second major surfaces;   a solid electrolyte interphase (SEI) layer comprising lithium and one or both of nitrogen and phosphorous at the first major surface of the sulfide glass substrate.   
     
     
         13 . The battery cell of claim  1 , wherein the SEI layer is continuous. 
     
     
         14 . The battery cell of claim  1 , wherein the SEI comprises lithium nitride. 
     
     
         15 . The battery cell of claim  1 , wherein the SEI comprises lithium phosphide. 
     
     
         16 . The battery cell of claim  1 , wherein the SEI is a continuous layer of a lithium nitride and/or lithium phosphide compound. 
     
     
         17 . The battery cell of claim  1 , wherein the SEI is not greater than 10 nm deep. 
     
     
         18 . The battery cell of claim  1 , wherein the SEI is not greater than 10-100 nm deep. 
     
     
         19 . The battery cell of claim  1 , wherein the SEI is not greater than 100-1000 nm deep. 
     
     
         20 . The battery cell of claim  1 , wherein the cathode is a lithium ion intercalating transition metal oxide electrode adjacent to the second major surface of the sulfide glass substrate of the solid-state laminate electrode assembly. 
     
     
         21 . The battery cell of  claim 20 , wherein a battery electrolyte is disposed between the second major surface of the sulfide glass substrate and the cathode. 
     
     
         22 . The battery cell of  claim 21 , wherein the cathode is disposed in direct contact with the second major surface of the sulfide glass substrate. 
     
     
         23 . The battery cell of  claim 22 , wherein the assembly is fully solid-state.