公开(公告)号：US20230130796A1

公开(公告)日：2023-04-27

申请号：US17974187

申请日：2022-10-26

Applicant: SK Innovation Co., Ltd. ,  SK ON CO., LTD.

Inventor： Sung Yon Oh ,  Sang Hye Shin ,  Min Woo Park

IPC: H01M10/0567 ,  H01M10/052 ,  H01M4/525 ,  H01M4/38 ,  H01M10/0568 ,  H01M4/04

Abstract: An electrolyte for a lithium secondary battery includes a lithium salt, an organic solvent, and a compound represented by Chemical Formula 1. The compound forms a solid electrolyte interphase on a surface of an anode. A lithium secondary battery including the electrolyte and having improved high-temperature storage properties can be provided.

公开(公告)号：US20230238527A1

公开(公告)日：2023-07-27

申请号：US18099498

申请日：2023-01-20

Applicant: SK Innovation Co., Ltd. ,  SK ON CO., LTD.

Inventor： Hee Jun Kweon ,  Sang Bok Kim ,  Sang Min Park ,  Sang Hye Shin ,  Tae Kyoung Lee ,  Ji Hoon Choi

IPC: H01M4/525 ,  H01M4/505

CPC classification number: H01M4/525 ,  H01M4/505 ,  H01M2004/028

Abstract: A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium metal oxide particle that contains tungsten and has a secondary shape in which a plurality of primary particles are aggregated. The lithium metal oxide particle includes a sulfur-containing portion formed between the primary particles in an inner region of the lithium metal oxide particle.

公开(公告)号：US20240162496A1

公开(公告)日：2024-05-16

申请号：US18385637

申请日：2023-10-31

Applicant: SK On Co., Ltd. ,  SK Innovation Co., Ltd.

Inventor： Ki Sung Park ,  Sang Hye Shin

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/052 ,  H01M10/0569 ,  H01M2300/004

Abstract: An electrolyte for a lithium secondary battery includes a lithium salt, an organic solvent, and a compound represented by a certain chemical formula. A lithium secondary battery includes a case, an electrode assembly including an anode and a cathode stacked repeatedly and alternately, and the electrolyte solution accommodated in the case together with the electrode assembly.

公开(公告)号：US12107256B2

公开(公告)日：2024-10-01

申请号：US18093215

申请日：2023-01-04

Applicant: SK ON CO., LTD.

Inventor： Sang Min Park ,  Tae Kyoung Lee ,  Sang Bok Kim ,  Jik Soo Kim ,  Sang Hye Shin ,  Yu Na Shim ,  Jeong Bae Yoon

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/131 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/525 ,  H01M10/0525

Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.

公开(公告)号：US20230207778A1

公开(公告)日：2023-06-29

申请号：US18093215

申请日：2023-01-04

Applicant: SK On Co., Ltd.

Inventor： Sang Min Park ,  Tae Kyoung Lee ,  Sang Bok Kim ,  Jik Soo Kim ,  Sang Hye Shin ,  Yu Na Shim ,  Jeong Bae Yoon

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/131 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/525 ,  H01M10/0525

Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.

公开(公告)号：US20230080189A1

公开(公告)日：2023-03-16

申请号：US17671670

申请日：2022-02-15

Applicant: SK ON CO., LTD.

Inventor： Sung Yon Oh ,  Sang Hye Shin ,  Yu Na Shim

IPC: H01M10/0567 ,  H01M4/36 ,  H01M4/485 ,  H01M4/38 ,  H01M4/583 ,  H01M10/0525 ,  C07F7/18

Abstract: An electrolyte solution for a secondary battery according to an exemplary embodiment includes a lithium salt, a non-aqueous organic solvent, and a silatrane-based compound represented by Chemical Formula 1. By including the electrolyte solution for a secondary battery according to an exemplary embodiment, a secondary battery can exhibit improved storage characteristics and improved capacity characteristics.

公开(公告)号：US12191450B2

公开(公告)日：2025-01-07

申请号：US17671670

申请日：2022-02-15

Applicant: SK ON CO., LTD.

Inventor： Sung Yon Oh ,  Sang Hye Shin ,  Yu Na Shim

IPC: H01M10/0567 ,  H01M4/36 ,  H01M4/38 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/525

Abstract: An electrolyte solution for a secondary battery according to an exemplary embodiment includes a lithium salt, a non-aqueous organic solvent, and a silatrane-based compound represented by Chemical Formula 1. By including the electrolyte solution for a secondary battery according to an exemplary embodiment, a secondary battery can exhibit improved storage characteristics and improved capacity characteristics.

公开(公告)号：US20220285667A1

公开(公告)日：2022-09-08

申请号：US17534202

申请日：2021-11-23

Applicant: SK INNOVATION CO., LTD.

Inventor： Sang Min PARK ,  Tae Kyoung Lee ,  Sang Bok Kim ,  Jik Soo Kim ,  Sang Hye Shin ,  Yu Na Shim ,  Jeong Bae Yoon

IPC: H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/04 ,  H01M4/525 ,  H01M10/0525

Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.

公开(公告)号：US20250038216A1

公开(公告)日：2025-01-30

申请号：US18616844

申请日：2024-03-26

Applicant: SK INNOVATION CO., LTD.

Inventor： Sang Hye Shin ,  Hyun Ji Jeon ,  Soo Bean Kim ,  Hyun Suk Chung

IPC: H01M4/62 ,  H01M4/02 ,  H01M10/052

Abstract: A conductive material dispersion, an electrode slurry and a lithium secondary battery, where the conductive material dispersion includes a conductive material including carbon nanotubes, a hydrogenated nitrile-based copolymer, a multivalent amine-based compound, and a solvent, the electrode slurry includes the conductive material dispersion, and the lithium secondary battery includes an electrode active material layer formed from the electrode slurry. An amine value of the conductive material dispersion is 5 mgKOH/g to 30 mgKOH/g.

公开(公告)号：US11621412B2

公开(公告)日：2023-04-04

申请号：US17534202

申请日：2021-11-23

Applicant: SK INNOVATION CO., LTD.

Inventor： Sang Min Park ,  Tae Kyoung Lee ,  Sang Bok Kim ,  Jik Soo Kim ,  Sang Hye Shin ,  Yu Na Shim ,  Jeong Bae Yoon

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/525 ,  H01M10/0525

Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.