The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2026
Filed:
Dec. 14, 2023
Lg Energy Solution, Ltd., Seoul, KR;
Bumgi Heo, Daejeon, KR;
Sun Young Shin, Daejeon, KR;
Sang Wook Lee, Daejeon, KR;
Yong Ju Lee, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
Disclosed are a lithium secondary battery, a battery pack and an electronic device. The lithium secondary battery includes: a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; a separator between the positive electrode and the negative electrode; and an electrolyte, wherein the positive electrode active material comprises a lithium transition metal compound comprising nickel (Ni), cobalt (Co) and manganese (Mn), wherein the lithium transition metal compound comprises a form of single particles having at least one of a single primary particle or an aggregate of 2 or more and 30 or less of primary particles, wherein the single particles comprise crystal grains of the lithium transition metal compound therein, wherein the negative electrode active material comprises a silicon carbon composite having Si crystal grains therein, and wherein the size of the Si crystal grains of the silicon carbon composite is 10% or less of the size of the crystal grains of the lithium transition metal compound.