SOLID-STATE ELECTROLYTE, SOLID-STATE BATTERY INCLUDING THE ELECTROLYTE, AND METHOD OF MAKING THE SAME

A solid-state ion conductor includes a compound of Formula LiMXNOA Formula 1 wherein, in Formula 1, M is Ta, Nb, V, or a combination thereof, X is an element having an oxidation state of n, wherein n is +1, +2, +3, +4, or a combination thereof, A is an element having an oxidation state of m, wherein m is −1, −2, or a combination thereof, and 0