Ion conductor, and positive electrode, solid electrolyte, and lithium battery each including the ion conductor, and method of preparing the ion conductor

Abstract

An ion conductor including: at least one oxide represented by Formulae 1 to 3 Li4±xM1−x′M′x′O4   Formula 1 wherein in Formula 1, 0≤x≤1 and 0≤x′≤1 , M is a Group 4 element, M′ is an element of Group 2, an element of Group 3, an element of Group 5, an element of Group 12, an element of Group 13, a vacancy, or a combination thereof, with the proviso that when M is Zr, then x≠0, x′≠0 and M′ is Be, Ca, Sr, Ba, Ra, Cd, Hg, Cn, Ga, In, TI, an element of Group 3, an element of Group 5, or a combination thereof; Li4−yM″O4−yA′y   Formula 2 wherein in Formula 2, M″ is a Group 4 element, A′ includes at least one halogen, with the proviso that when M″ is Zr, y≠0, Li4+4zM′″1−zO4   Formula 3 wherein in Formula 3, 0<z<1, and M″′ is a Group 4 element.

Dependencies are inferred from the claim text.