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:
Nov. 26, 2024
Filed:
Jul. 08, 2020
Lg Energy Solution, Ltd., Seoul, KR;
LG ENERGY SOLUTION, LTD., Seoul, KR;
Abstract
Disclosed is a method of manufacturing a negative electrode, wherein a negative electrode structure is electrochemically charged while being pressed with a plurality of pre-lithiation rolls in performing pre-lithiation of the negative electrode structure by a roll-to-roll method, and here, the pressing pressures of the plurality of pre-lithiation rolls are increased in a movement direction of the negative electrode structure. Since the pressing pressures are increased in the movement direction of the negative electrode structure, volume expansion, structural deformation, and damage to an active material due to the pre-lithiation may be prevented, and at the same time, the pre-lithiation may be performed uniformly, and thus it is preferable for improving lifespan characteristics of a negative electrode.