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：US20240030414A1

公开(公告)日：2024-01-25

申请号：US18265560

申请日：2021-12-07

Applicant: LG Energy Solution, Ltd.

Inventor： Seulki Chae ,  Hakyoon Kim ,  Sora Baek ,  Hyuck Hur ,  Dong Hwi Kim ,  Hyeongil Kim ,  Wang Mo Jung ,  Donghun Lee

IPC: H01M4/36 ,  H01M4/48 ,  H01M10/052 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  C01G53/00

CPC classification number: H01M4/366 ,  H01M4/48 ,  H01M10/052 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  C01G53/006 ,  H01M2004/028

Abstract: Disclosed is a positive electrode material for a lithium secondary battery capable of improving the problems of resistance and lifetime deterioration of the battery by forming a thin and uniform metal oxide on the surface of the lithium nickel cobalt manganese-based positive electrode active material, and a method for preparing the same and a lithium secondary battery comprising the same. The method of preparing the positive electrode material for the lithium secondary battery comprises a method of coating a metal oxide on the surface of a lithium nickel cobalt manganese-based positive electrode active material through a chemical vapor deposition. The method includes placing the lithium nickel cobalt manganese-based positive electrode active material in a deposition apparatus and supplying a metal oxide precursor and a carrier gas, and the lithium nickel cobalt manganese-based positive electrode active material is stirred during deposition.