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:
Jan. 06, 2026
Filed:
Dec. 23, 2022
Lg Energy Solution, Ltd., Seoul, KR;
Youn Cheol Joe, Daejeon, KR;
O Jong Kwon, Daejeon, KR;
Ki Woong Kim, Daejeon, KR;
Min Hyun Kim, Daejeon, KR;
Jeong Geun Jo, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
A method for manufacturing a positive electrode for a lithium secondary battery includes: (S) forming a positive electrode active material layer by applying a positive electrode slurry composition comprising lithium iron phosphate and a binder onto a current collector and drying it; (S) rolling a positive electrode active material layer N times (N is an integer greater than or equal to 2). In the rolling step during the first rolling, the rate of change in thickness of a positive electrode active material layer according to Equation 1 below is 5% to 15%, and during subsequent rolling, the rate of change in thickness of a positive electrode active material layer according to Equation 1 below is 3.5% or less.