POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

WIPO Patent Application WO/2019/059647

A3

The present invention relates to a positive electrode material, a method for manufacturing the same, a positive electrode for a lithium secondary battery and a lithium secondary battery comprising the same. According to the present invention, the positive electrode material comprises: a first positive active material represented by chemical formula 1 below and a second positive active material represented by chemical formula 2 below, wherein the positive electrode material has an electrical conductivity of 0.1 μS/cm to 150 μS/cm, which is measured after compressing the second positive active material with a rolling density of 400kgf to 2,000 kgf and manufacturing the second positive active material in the form of a pellet. [Chemical formula 1] LiCo1-aM1 aO2 wherein, M1 is at least one selected from the group consisting of Al, Ti, Mg, and Zr, and 0≤a≤0.2 [Chemical formula 2] LiNibCocMndM2 eO2 wherein, M2 is at least one selected from the group consisting of Al, Ti, Mg, Zr, Y, Sr, and B, and 0