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:
Sep. 01, 2026
Filed:
Sep. 16, 2021
Lg Energy Solution, Ltd., Seoul, KR;
Ji Hoon Ryu, Daejeon, KR;
Bum Young Jung, Daejeon, KR;
Jung Hoon Lee, Daejeon, KR;
Yeo Min Yoon, Daejeon, KR;
Jae Won Lee, Daejeon, KR;
Yong Hee Kang, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
Provided are a lithium secondary battery and a manufacturing method thereof capable of improving the lifespan properties and high-temperature storage properties of the lithium secondary battery, wherein the lithium secondary battery includes a positive electrode including a positive electrode active material layer containing a positive electrode active material and one or more additives selected from succinonitrile (SN), propane sultone (PS), and propene sultone (PRS). The lithium secondary battery further includes a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a gel polymer electrolyte, wherein the additive is included in an amount of 0.2 parts by weight to 5.0 parts by weight based on 100 parts by weight of the positive electrode active material layer.