MUMBAI, India, June 30 -- Intellectual Property India has published a patent application (202617053813 A) filed by Lg Energy Solution, Ltd. on April 28, 2026, for Cathode Material, Manufacturing Method Therefor, And Cathode And Lithium Secondary Battery Comprising Same.
Inventors include Kim, Hyeong Il; Lho, Eun Sol; Hwang, Jin Tae; Oh, Su Yeon; Lee, Seok Jin; and Cho, Eun Byeol.
The application for the patent was published on June 26, 2026, under issue no. 26/2026.
Abstract: The present invention relates to a cathode material and a preparation method therefor, the cathode material comprising: a first cathode active material, which is in the form of a secondary particle obtained by aggregation of a plurality of primary particles, contains nickel, cobalt, and manganese, with 70 mol% or more of nickel among the total metals, and has a first average particle diameter (D50); and a second cathode active material having a second average particle diameter (D50) different from the first average particle diameter (D50), wherein the first cathode active material has an average aspect ratio of 0.86-0.94, which is the arithmetic average value of the aspect ratio defined by Equation 1 below, and an average compactness of 0.89-0.96, which is the arithmetic average value of the compactness defined by Equation 2 below. [Equation 1] Aspect ratio = ra / R; [Equation 2] Compactness) = rc / R. In Equations 1 and 2, R represents the length of the long axis passing through the center of the first cathode active material particle, ra represents is the length of the short axis passing through the center of the first cathode active material particle, and rc represents the diameter of a circle having the same area as the area of the first cathode active material.
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