Cathode Active Material For All Solid State Battery, Cathode For All Solid State Battery, And All Solid State Battery Comprising Same

Abstract: The present invention relates to: a cathode active material for an all-solid-state battery, comprising a core, which can reversibly absorb and desorb lithium ions, and a coating layer formed on the surface of the core, the coating layer comprising a lithium carbon oxide represented by chemical formula 1 and a lithium titanium oxide represented by chemical formula 2; a cathode for a solid state battery, comprising the cathode active material for an all-solid-state battery, and a sulfide-based solid electrolyte; and a solid-state battery comprising a cathode, an anode and a solid electrolyte layer arranged between the cathode and the anode, the cathode comprising the cathode for an all-solid-state battery. [Chemical formula 1] LiaCOb In chemical formula 1, a satisfies 0

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