Positive electrode active material for rechargeable lithium battery, method of manufacturing the same, and rechargeable lithium battery including the same

Abstract

Positive electrode active materials, their manufacturing methods, and rechargeable lithium batteries including the same are provided. The positive electrode active material comprises a first particle that comprises a plurality of primary particles and a first coating part on an interface between the primary particles. The primary particles comprise a compound represented by Chemical Formula 1. The first coating part comprises lithium metal phosphate. In Chemical Formula 1, the subscripts satisfy the relationship of 0.8<a1≤1.2, 0.7≤x1≤1.0, 0≤y1≤0.3, 0≤z1≤0.05, 0≤c1≤0.05, and 0.99≤x1+y1+z1≤1.01, and B1 is at least one element selected from among Ti, Mg, V, and Nb.

Dependencies are inferred from the claim text.