公开(公告)号：US20240379964A1

公开(公告)日：2024-11-14

申请号：US18783374

申请日：2024-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cheng LI ,  Zipeng ZENG ,  Huihui LIU ,  Jingming WANG

IPC: H01M4/62 ,  C08F8/22 ,  C08L27/16 ,  C08L27/24 ,  H01M4/02

Abstract: This application provides a binder composition. The binder composition includes a first fluoropolymer and a second fluoropolymer, where the first fluoropolymer includes polyvinylidene fluoride with a weight-average molecular weight of 5000000-9000000, and a weight-average molecular weight of the second fluoropolymer is not greater than 600000. Featuring good processability, this binder composition, even added in small amounts, can provide electrode plates with great adhesion force and improve the cycling performance of a battery.

公开(公告)号：US20240356036A1

公开(公告)日：2024-10-24

申请号：US18746957

申请日：2024-06-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cheng LI ,  Zipeng ZENG ,  Huihui LIU ,  Jingming WANG

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/052

CPC classification number: H01M4/623 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/028

Abstract: This application provides a binder composition. The binder composition includes a first fluoropolymer and a second fluoropolymer, where the first fluoropolymer includes polyvinylidene fluoride with a weight-average molecular weight of 1,500,000-5,000,000, and a weight-average molecular weight of the second fluoropolymer does not exceed 600,000. The binder composition has good processability, achieves high adhesion force for the electrode plate when added in small amounts, and improves the cycling performance of the battery.