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:
Aug. 13, 2024
Filed:
Jan. 23, 2020
Lg Chem, Ltd., Seoul, KR;
Do Hwa Jung, Daejeon, KR;
Tae Gyun Noh, Daejeon, KR;
Ki Woong Kim, Daejeon, KR;
Woo Sirl Lee, Daejeon, KR;
Yoon Jae Lee, Daejeon, KR;
Jung Whan Song, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
The present invention provides a lithium secondary battery which includes a positive electrode including a first lithium cobalt oxide and a second lithium cobalt oxide which have different average particle diameters (D) from each other, a negative electrode including first graphite and second graphite which have different average particle diameters (D) from each other, and an electrolyte including a a first additive as a nitrile-based compound, wherein the first lithium cobalt oxide and the second lithium cobalt oxide each independently contain aluminum in a concentration of 2,500 ppm to 4,000 ppm.