公开(公告)号：US12237512B2

公开(公告)日：2025-02-25

申请号：US17608073

申请日：2020-12-22

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Yo Han Kwon ,  Joonwon Lim ,  Min Chul Jang ,  Sun Kyu Kim

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/48

Abstract: Disclosed is a binder composition for a negative electrode which includes a binder polymer containing at least one first functional group selected from the group consisting of a hydroxy group and a carboxyl group, and a crosslinked polymer containing at least one second functional group selected from the group consisting of an amino group and an isocyanate group, wherein the crosslinked polymer is present in an amount of 1.5 parts by weight to 8.5 parts by weight based on 100 parts by weight of the binder polymer.

公开(公告)号：US12199288B2

公开(公告)日：2025-01-14

申请号：US17430804

申请日：2020-11-04

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Yo Han Kwon ,  Il Hong Kim ,  Min Chul Jang

IPC: H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/48 ,  H01M4/587 ,  H01M4/66 ,  H01M4/74 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/531 ,  H01M4/02

Abstract: The present invention relates to an anode including multiple current collectors juxtaposed in parallel, and a secondary battery comprising same, wherein the anode enables providing a high-capacity secondary battery while suppressing volume changes due to a silicone component-containing active material employed therein.

公开(公告)号：US12191473B2

公开(公告)日：2025-01-07

申请号：US17762541

申请日：2021-07-30

Applicant: LG Energy Solution, Ltd.

Inventor： Il Hong Kim ,  Sung Chul Lim ,  Yo Han Kwon

IPC: H01M4/04

Abstract: A rolling method for an electrode, the method comprising the steps of: coating an electrode slurry including an electrode active material, on a current collector, to form an electrode specimen; measuring rheological properties of the electrode specimen according to temperature; deriving an appropriate temperature condition for rolling the electrode from the rheological properties of the electrode specimen according to temperature; and rolling the electrode in the appropriate temperature condition.

公开(公告)号：US20240413319A1

公开(公告)日：2024-12-12

申请号：US18698282

申请日：2022-10-05

Applicant: LG Energy Solution, Ltd.

Inventor： Seung Won Park ,  Hyun Woo Park ,  Yo Han Kwon ,  Jae Wook Lee ,  Chan Soo Jun

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/505 ,  H01M10/052

Abstract: A lithium secondary battery including a negative electrode including a negative electrode active material, a positive electrode including a positive electrode active material, a separator interposed between the negative electrode and the positive electrode, and an electrolyte, wherein the negative electrode active material includes silicon particles, the positive electrode active material includes an overlithiated manganese-based oxide represented by the disclosed Formula 1, a Si charge depth represented by the disclosed Equation 1 is 30% to 60%, and a Si discharge depth represented by the disclosed Equation 2 is 10% or greater.