MUMBAI, India, March 14 -- Intellectual Property India has published a patent application (202517132121 A) filed by Lg Energy Solution, Ltd., Seoul, Republic of Korea, on Dec. 26, 2025, for 'method for manufacturing lithium secondary battery.'
Inventor(s) include Han, Myoung Hun; Sung, Kiwon; Kang, Bohyun; Jang, Daeun; Kim, Jeongmin; and Lee, Byoungsoo.
The application for the patent was published on March 13, under issue no. 11/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a method for manufacturing a lithium secondary battery, the method comprising a step (S1) of producing a preliminary-cell which comprises a positive electrode including a positive electrode active material, a negative electrode, a separator, and an electrolyte, and a step (S2) of activating the preliminary-cell by charging the preliminary-cell to a charging cut-off voltage, wherein: the positive electrode active material comprises an overlithiated manganese-based oxide that comprises, among the total metal other than lithium, at least 50 mol% manganese (Mn) and in which the mole ratio (Li/Me) of lithium to the total metal other than lithium is greater than 1; the charging cut-off voltage is greater than 4.3V; and the activation step is performed such that the ratio (B/A) of the charging capacity (B) in a charging cut-off voltage range, from 4.3V, relative to the total charging capacity (A) when the preliminary-cell has been charged to the charging cut-off voltage, is 0.63 or less."
The patent application was internationally filed on Aug. 28, 2024, under International application No.PCT/KR2024/012910.
Disclaimer: Curated by HT Syndication.
