公开(公告)号：US20240113284A1

公开(公告)日：2024-04-04

申请号：US18374302

申请日：2023-09-28

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/48 ,  H01M4/525 ,  H01M4/587

CPC classification number: H01M4/366 ,  H01M4/0404 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/483 ,  H01M4/525 ,  H01M4/587 ,  H01M2004/027

Abstract: A negative electrode for a secondary battery, including: a current collector; a first negative electrode active material layer provided on the current collector; and a second negative electrode active material layer provided on the first negative electrode active material layer, in which the first and second negative electrode active material layers include a silicon-based active material and natural graphite, the natural graphite has an average particle diameter (D50) of 10 μm or less, and the OI (004/110) of the first and second negative electrode active material layers is 8 or less, and a secondary battery including the same.

公开(公告)号：US20240113283A1

公开(公告)日：2024-04-04

申请号：US18373614

申请日：2023-09-27

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/40 ,  H01M4/583 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/364 ,  H01M4/386 ,  H01M4/405 ,  H01M4/583 ,  H01M10/052 ,  H01M2004/027

Abstract: A negative electrode for a secondary battery, including: a current collector; a first negative electrode active material layer provided on the current collector; and a second negative electrode active material layer provided on the first negative electrode active material layer, in which at least one of the first and second negative electrode active material layers includes a lithium-substituted carboxymethyl cellulose, and the second negative electrode active material layers includes a silicon-based active material, and a secondary battery including the same.

公开(公告)号：US20250105338A1

公开(公告)日：2025-03-27

申请号：US18832240

申请日：2023-10-11

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M10/052 ,  H01M4/36 ,  H01M4/48 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0567

Abstract: A lithium secondary battery includes a positive electrode, a separator, a negative electrode, and an electrolyte, in which the positive electrode includes a lithium composite transition metal compound including nickel (Ni) and cobalt (Co), the negative electrode includes a mixed negative electrode active material of a silicon-based active material and a carbon-based active material, the electrolyte includes fluoroethylene carbonate, and the efficiency constants of the mixed negative electrode active material and the lithium composite transition metal compound and the part by weight of the fluoroethylene carbonate satisfy a specific Equation.

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：US20250038170A1

公开(公告)日：2025-01-30

申请号：US18778084

申请日：2024-07-19

Applicant: LG Energy Solution, Ltd.

Inventor： Shulkee Kim ,  Kyutae Park ,  Cheoljin Oh ,  Kwang Ho Yoo ,  Gayoung Lim ,  Wonhee Jung

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

Abstract: A negative electrode for a secondary battery includes a current collector and a negative electrode active material layer provided on at least one surface of the current collector. The negative electrode active material layer includes a first region corresponding to 50% of a total thickness of the negative electrode active material layer from a surface facing the current collector and a second region corresponding to 50% of the total thickness of the negative electrode active material layer from a surface opposite to the surface facing the current collector. The negative electrode active material layer includes two or more types of negative electrode active materials having D50 different from each other and satisfies the Equations 1 and 2. A secondary battery including the negative electrode is also provided.

公开(公告)号：US20240128491A1

公开(公告)日：2024-04-18

申请号：US18377088

申请日：2023-10-05

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M10/052 ,  G01R31/385 ,  H01M4/36 ,  H01M4/48 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583

CPC classification number: H01M10/052 ,  G01R31/3865 ,  H01M4/364 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M2004/028

Abstract: A lithium secondary battery, and a method of making the same, including a positive electrode, a separator and a negative electrode, in which the positive electrode includes a lithium composite transition metal compound including nickel (Ni) and cobalt (Co), the negative electrode includes a silicon-based active material and a carbon-based active material, the efficiency constants of the silicon-based active material and the carbon-based active material and the efficiency constant of the lithium composite transition metal compound satisfy an efficiency balance defined by Equation 1.

公开(公告)号：US20240113285A1

公开(公告)日：2024-04-04

申请号：US18374367

申请日：2023-09-28

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/366 ,  C01G53/50 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/028

Abstract: A positive electrode material comprising: a first positive electrode active material in the form of single particles; and a second positive electrode active material in the form of single particles which has a lager particle diameter than that of the first positive electrode active material, wherein at least one of the first or second positive electrode active materials has a coating layer comprising boron (B) and cobalt (Co) provided on at least a portion of a surface of the single particle, and a positive electrode and a secondary battery including the same.