公开(公告)号：US20230017229A1

公开(公告)日：2023-01-19

申请号：US17930715

申请日：2022-09-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Inoh CHA ,  Deok-Hyun KIM ,  Jinhee LEE

IPC: H01M4/66 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

Abstract: A negative electrode for a lithium secondary battery comprises a current collector and a negative electrode active material layer formed on the current collector, wherein the negative electrode active material layer includes a first negative electrode active material and a first binder, and a second active material layer formed on the first active material layer and including a second negative electrode active material and a second binder, a content of the first binder is greater than that of the second binder, a loading level of the negative electrode active material layer is 10 mg/cm2 to 30 mg/cm2, a loading level of the first active material layer is 4 mg/cm2 to 25 mg/cm2, a loading level of the second active material layer is 4 mg/cm2 to 25 mg/cm2, and a loading level of the second active material layer is equal to or higher than that of the first active material layer.

公开(公告)号：US20230006212A1

公开(公告)日：2023-01-05

申请号：US17930676

申请日：2022-09-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Inoh CHA ,  Deok-Hyun KIM ,  Jinhee LEE

IPC: H01M4/66 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

Abstract: The present invention relates to a negative electrode for a lithium secondary battery and a lithium secondary battery comprising the same. The negative electrode for a lithium secondary battery comprises a current collector and a negative electrode active material layer formed on the current collector, wherein the negative electrode active material layer includes a first negative electrode active material and a first binder, and a second active material layer formed on the first active material layer and including a second negative electrode active material and a second binder, a content of the first binder is greater than that of the second binder, a loading level of the negative electrode active material layer is 10 mg/cm2 to 30 mg/cm2, a loading level of the first active material layer is 4 mg/cm2 to 25 mg/cm2, a loading level of the second active material layer is 4 mg/cm2 to 25 mg/cm2, and a loading level of the second active material layer is equal to or higher than that of the first active material layer.