公开(公告)号：US20250105254A1

公开(公告)日：2025-03-27

申请号：US18832184

申请日：2023-10-13

Applicant: LG Energy Solution, Ltd.

Inventor： Kyutae Park ,  Wonhee Jung ,  Minsoo Kim ,  Shulkee Kim ,  Lilin Piao ,  Sora Baek ,  Kwang Ho Yoo ,  Gyeongseop Lee

IPC: H01M4/133 ,  H01M4/02 ,  H01M4/13 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525

Abstract: A negative electrode for a secondary battery, includes a current collector, a first negative electrode active material layer, and a second negative electrode active material layer. The first negative electrode active material layer is provided on the current collector and includes a silicon carbon composite. The second negative electrode active material layer is provided on the first negative electrode active material layer and includes a silicon oxide. A secondary battery including the same is also provided.

公开(公告)号：US12218319B2

公开(公告)日：2025-02-04

申请号：US17773690

申请日：2021-01-19

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Dong Jun Lee ,  Sa Rah Kim ,  Dong Hui Kim ,  Kwang Ho Yoo

IPC: H01M10/44 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/139 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0585

Abstract: A method of preparing a secondary battery which includes pre-lithiating an electrode assembly which includes an electrode structure including a plurality of electrodes and a plurality of separators, and a metal substrate. The plurality of electrodes and the plurality of separators are alternatingly stacked. The metal substrate is present on an outermost surface of the electrode structure in a direction in which the electrode and the separator are stacked. Each positive electrode and negative electrode are spaced apart from each other with one separator of the plurality of separators disposed therebetween. The pre-lithiating includes applying a first current by electrically connecting one of the plurality of positive electrodes and one of the plurality of negative electrodes, and applying a second current by electrically connecting the metal substrate and one of the plurality of positive electrodes, after applying the first current.

公开(公告)号：US20220407044A1

公开(公告)日：2022-12-22

申请号：US17836660

申请日：2022-06-09

Applicant: LG Energy Solution, Ltd.

Inventor： Nam Jeong Lee ,  Sang Min Kwak ,  Ki Seok Lee ,  Koo Seung Chung ,  Dong Oh Shin ,  Kwang Ho Yoo

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/505 ,  H01M4/58

Abstract: The present technology relates to a dry method of manufacturing a positive electrode for a lithium secondary battery, a positive electrode manufactured thereby, and a lithium secondary battery including the same. Thereby, a positive electrode including a positive electrode mixture layer with an appropriate density, and effective adhesion between the positive electrode mixture layer and the current collector may be realized.