Positive electrode active material for all-solid-state battery, positive electrode for all-solid-state battery, and all-solid-state battery comprising the same

Abstract

A positive electrode active material includes a core capable of reversible adsorption and release of lithium ions and a coating layer formed on a surface of the core, wherein the coating layer comprises lithium carbon oxide represented by Formula 1 and lithium titanium oxide represented by Formula 2. A positive electrode includes the positive electrode active material and a sulfide-based solid electrolyte, and a battery including the positive electrode, a negative electrode, and a solid electrolyte layer disposed between the positive electrode and the negative electrode may be provided, wherein [Formula 1]=LiaCOb (wherein a is 0<a≤4 and b is 0<b≤4); and [Formula 2]=LixTiyO4 (wherein x is 0.8≤x≤1.4 and y is 1.6≤y≤2.2). The battery is preferably an all-solid-state battery.

Dependencies are inferred from the claim text.