| abstract |
The invention relates to a positive electrode active material, a positive electrode slurry composition and a lithium secondary battery. The positive electrode active material includes: a lithium composite oxide, including primary particles and secondary particles agglomerated from the primary particles; and at least one lithium alloy oxide, represented by the following chemical formula 1, in the primary particles At least a portion of the interface between the lithium alloy oxide and the surface of the secondary particle exists, and the lithium alloy oxide exhibits a density that decreases from the surface portion of the secondary particle toward the central portion of the secondary particle. Concentration gradient, chemical formula 1: Li a M1 b O c , wherein, M1 is selected from Ti, Zr, Mg, V, B, Mo, Zn, Nb, Ba, Ta, Fe, Cr, Sn, Hf, Ce, W , at least one of Nd and Gd, 0≤a≤6, 0<b≤, 0<c≤10. |