SOLID STATE BATTERY
A lithium ion-conductive solid electrolyte including a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass is capable of high performance in a lithium metal battery by providing a high degree of lithium ion conductivity while being highly resistant to the initiation and/or propagation of lithium dendrites. Such an electrolyte is also itself manufacturable, and readily adaptable for battery cell and cell component manufacture, in a cost-effective, scalable manner. An automated machine based system, apparatus and methods assessing and inspecting the quality of such vitreous solid electrolyte sheets, electrode sub-assemblies and lithium electrode assemblies can be based on spectrophotometry and can be performed inline with fabricating the sheet or web (e.g., inline with drawing of the vitreous Li ion conducting glass) and/or with the manufacturing of associated electrode sub-assemblies and lithium electrode assemblies and battery cells.
1 . A solid state battery cell, comprising:
a solid state lithium negative electrode;
a solid state positive electrode comprising a lithium electroactive material; and
a lithium ion-conducting vitreous sulfide glass separator disposed between the anode and cathode.
2 . The battery cell of claim 1 , wherein the cell is devoid of a liquid phase electrolyte.
3 . The battery cell of claim 2 , wherein the negative electrode comprises lithium metal.
4 . The battery cell of claim 2 , wherein the negative electrode comprises a lithium ion intercalating material.
5 . The battery cell of claim 4 , wherein the positive electrode comprises a lithium ion intercalating material.