公开(公告)号：US20190067685A1

公开(公告)日：2019-02-28

申请号：US16047985

申请日：2018-07-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhongsi Zhu ,  Ze Zhong ,  Chengdong Sun ,  Yi Zheng ,  Lingyun Feng ,  Hang Zhou ,  Long Wang

IPC: H01M4/36 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525 ,  H01G11/38 ,  H01G11/70

Abstract: The present disclosure provides a negative electrode slurry, a negative electrode plate and an electrochemical energy storage device. The negative electrode slurry comprises a solvent and a solid component dispersed in the solvent. The solid component comprises a negative electrode active material, a water-soluble binder and a dispersant. The negative electrode active material comprises a carbon-type active material. The dispersant comprises an A dispersant and a B dispersant, the A dispersant is a cellulose-type dispersant, the B dispersant is at least one of poly(acrylic acid)-type dispersant, polyacrylate-type dispersant and polyacrylamide-type dispersant. Under a combined effect of the A dispersant and the B dispersant, they can ensure that the electrochemical energy storage device has excellent dynamic performance, which can prevent lithium (or sodium, magnesium and zinc) from precipitating under condition of rapid and large current charging, meanwhile they can ensure that the electrochemical energy storage device has excellent cycle performance.

公开(公告)号：US20240347707A1

公开(公告)日：2024-10-17

申请号：US18629954

申请日：2024-04-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lingyun Feng ,  Yanhuang Fan

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/58 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/5825 ,  H01M4/583 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided are a cathode active material composition, a cathode plate, a secondary battery, a battery module, a battery pack, and an electric device. In particular, the present application provides a cathode active material composition, including a cathode active material and a dispersant. The cathode active material composition of the present application can improve the poor dispersion of the cathode active material powder and the high viscosity of the slurry during the preparation of the cathode slurry, and further improve flexibility of the cathode plate.

公开(公告)号：US11888150B2

公开(公告)日：2024-01-30

申请号：US18354618

申请日：2023-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui Liu ,  Lingyun Feng ,  Yanhuang Fan ,  Lianwei Duan

IPC: H01M4/136 ,  H01M4/36 ,  H01M4/62 ,  H01M4/58 ,  H01M4/583 ,  H01M4/02

CPC classification number: H01M4/136 ,  H01M4/366 ,  H01M4/583 ,  H01M4/5825 ,  H01M4/622 ,  H01M4/625 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode plate includes a positive electrode current collector, a positive electrode film layer arranged on at least one surface of the positive electrode current collector, and a conductive undercoat layer positioned between the positive electrode current collector and the positive electrode film layer. The positive electrode film layer includes a positive electrode active material including an inner core and a shell coating the inner core. The shell includes a first coating layer coating the inner core, a second coating layer coating the first coating layer, and a third coating layer coating the second coating layer. The conductive undercoat layer includes a polymer, an aqueous binder, and a conductive agent.

公开(公告)号：US20240396013A1

公开(公告)日：2024-11-28

申请号：US18791470

申请日：2024-08-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yanhuang Fan ,  Lingyun Feng

IPC: H01M4/136 ,  C09D5/24 ,  C09D133/02 ,  C09D133/08 ,  H01M4/02 ,  H01M4/62 ,  H01M10/42

Abstract: The present application provides a positive electrode plate, a secondary battery, and an electrical apparatus. The positive electrode plate comprises a positive electrode current collector, a positive electrode film layer arranged on at least one surface of the positive electrode current collector, and a conductive priming coat located between the positive electrode current collector and the positive electrode film layer, where the positive electrode film layer comprises a positive electrode active material, the positive electrode active material has a specific surface area of 15 m2/g-25 m2/g, a coating weight on one side of the positive electrode current collector is 20 mg/cm2-40 mg/cm2, and the conductive priming coat comprises a first polymer, a first water-based binder, and a first conductive agent.

公开(公告)号：US20240356031A1

公开(公告)日：2024-10-24

申请号：US18629941

申请日：2024-04-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lingyun Feng ,  Yanhuang Fan

IPC: H01M4/62 ,  C01B25/42 ,  C01B25/45 ,  H01M4/02 ,  H01M4/131 ,  H01M4/36 ,  H01M4/58

CPC classification number: H01M4/62 ,  C01B25/425 ,  C01B25/45 ,  H01M4/131 ,  H01M4/366 ,  H01M4/5825 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/028

Abstract: Provided are a positive electrode active material composition, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric device. In particular, the present application provides a positive electrode active material composition, including a positive electrode active material and a dispersant. The positive electrode active material composition of the present application can improve the poor dispersion of the positive electrode active material powder and the high viscosity of the slurry during the preparation of the positive electrode slurry, and further improve flexibility of the positive electrode plate.