LITHIUM, PHOSPHORUS, SULFUR, AND IODINE CONTAINING ELECTROLYTE AND CATHOLYTE COMPOSITIONS, ELECTROLYTE MEMBRANES FOR ELECTROCHEMICAL DEVICES, AND ANNEALING METHODS OF MAKING THESE ELECTROLYTES AND CATHOLYTES

The present disclosure sets forth battery components for secondary and/or traction batteries. Described herein are new solid-state lithium (Li) conducting electrolytes including monolithic, single layer, and bi-layer solid-state sulfide-based lithium ion (Li) conducting catholytes or electrolytes. These solid-state ion conductors have particular chemical compositions which are arranged and/or bonded through both crystalline and amorphous bonds. Also provided herein are methods of making these solid-state sulfide-based lithium ion conductors including new annealing methods. These ion conductors are useful, for example, as membrane separators in rechargeable batteries.