Patent number: 12261263
Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte, wherein the positive electrode includes a positive electrode active material layer having a positive electrode active material containing an overlithiated manganese-based oxide represented by Formula 1 below, and the negative electrode includes a negative electrode active material layer having a silicon-based negative electrode active material, LiaNibCocMndMeO2??[Formula 1] wherein, M is at least one selected from the group consisting of Al, B, Co, W, Mg, V, Ti, Zn, Ga, In, Ru, Nb, Sn, Sr, and Zr, and 1<a, 0?b?0.5, 0?c?0.1, 0.5?d<1.0, and 0?e?0.2, and. Preferably, in the Formula 1, 1.1?a?1.5, 0.1?b?0.4, 0?c?0.05, 0.5?d?0.80, and 0?e?0.1.
Type:
Grant
Filed:
July 21, 2022
Date of Patent:
March 25, 2025
Assignee:
LG Energy Solution, Ltd.
Inventors:
Byung Chun Park, Yo Han Kwon, Je Young Kim, Seok Koo Kim, Wang Mo Jung, Yong Ju Lee, Chul Haeng Lee
Publication number: 20240047731
Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte, wherein the positive electrode includes a positive electrode active material layer having a positive electrode active material containing an overlithiated manganese-based oxide represented by Formula 1 below, and the negative electrode includes a negative electrode active material layer having a silicon-based negative electrode active material, LiaNibCocMndMeO2 ??[Formula 1] wherein, M is at least one selected from the group consisting of Al, B, Co, W, Mg, V, Ti, Zn, Ga, In, Ru, Nb, Sn, Sr, and Zr, and 1<a, 0?b?0.5, 0?c?0.1, 0.5?d<1.0, and 0?e?0.2, and. Preferably, in the Formula 1, 1.1?a?1.5, 0.1?b?0.4, 0?c?0.05, 0.5?d?0.80, and 0?e?0.1.
Type:
Application
Filed:
July 21, 2022
Publication date:
February 8, 2024
Applicant:
LG Energy Solution, Ltd.
Inventors:
Byung Chun Park, Yo Han Kwon, Je Young Kim, Seok Koo Kim, Wang Mo Jung, Yong Ju Lee, Chul Haeng Lee