公开(公告)号：US20240250315A1

公开(公告)日：2024-07-25

申请号：US18626973

申请日：2024-04-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaonan CHENG ,  Haiyi HONG ,  Lei LI ,  Jianrui YANG ,  Haiyang KANG ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M10/42 ,  C08F220/14 ,  H01M4/62 ,  H01M50/42

CPC classification number: H01M10/4235 ,  C08F220/14 ,  H01M4/622 ,  H01M50/42

Abstract: A binder includes a polyacrylate copolymer and a lithium-containing compound. A preparation method of a binder includes adding monomers of a polyacrylate copolymer to a first emulsifier solution to obtain a pre-emulsion, adding an initiator to the pre-emulsion for reaction to obtain a reaction solution, and adding a lithium-containing substance to the reaction solution to adjust pH value to 7 to 8 and performing filtering to obtain the binder.

公开(公告)号：US20240274978A1

公开(公告)日：2024-08-15

申请号：US18631365

申请日：2024-04-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Xiaonan CHENG ,  Yanyun MA ,  Jianrui YANG ,  Peng WANG ,  Lei CHAO ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M50/446 ,  H01M50/42 ,  H01M50/431 ,  H01M50/443

CPC classification number: H01M50/446 ,  H01M50/42 ,  H01M50/431 ,  H01M50/443

Abstract: This application discloses a separator and a preparation method thereof, a battery, and an electric apparatus. The separator includes a substrate and a coating, where the coating is formed on at least a portion of surface of the substrate, and the coating includes composite particles and a binder. The composite particles form bulges on surface of the coating, and the composite particles include polyacrylate particles and inorganic particles. The inorganic particle is present between at least two of the polyacrylate particles. Crosslinking degree a of the composite particles and mass swelling degree b thereof in an electrolyte satisfy a/b≥1 and a≥75%.

公开(公告)号：US20240222791A1

公开(公告)日：2024-07-04

申请号：US18437255

申请日：2024-02-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei LI ,  Haiyi HONG ,  Xiaonan CHENG ,  Jianrui YANG ,  Haiyang KANG ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M50/449 ,  H01M50/42 ,  H01M50/426 ,  H01M50/489

CPC classification number: H01M50/449 ,  H01M50/42 ,  H01M50/426 ,  H01M50/489

Abstract: This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a core layer structure and a shell layer structure provided on a surface of the core layer structure, where the core layer structure includes a polyacrylate polymer, and the shell layer structure includes a polyvinylidene fluoride polymer.

公开(公告)号：US20240218169A1

公开(公告)日：2024-07-04

申请号：US18610259

申请日：2024-03-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei LI ,  Haiyi HONG ,  Xiaonan CHENG ,  Jianrui YANG ,  Peng WANG ,  Yi ZHENG ,  Chengdong SUN

IPC: C08L33/12 ,  H01M50/426

CPC classification number: C08L33/12 ,  H01M50/426 ,  C08L2207/53

Abstract: A binder includes a core layer structure and a shell layer structure provided on a surface of the core layer structure and fully enveloping the core layer structure. The core layer structure includes a polyacrylate polymer, and the shell layer structure includes a polyvinylidene fluoride polymer.

公开(公告)号：US20240162566A1

公开(公告)日：2024-05-16

申请号：US18419353

申请日：2024-01-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Yanyun MA ,  Xiaonan CHENG ,  Lei CHAO ,  Peng WANG ,  Chongwang HAN ,  Yuxia LI ,  Jianrui YANG ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M50/446 ,  H01M50/42 ,  H01M50/494

CPC classification number: H01M50/446 ,  H01M50/42 ,  H01M50/494

Abstract: A separator includes a substrate and a coating. The coating is formed on at least a portion of surface of the substrate. The coating includes composite particles and a binder. The composite particles form bulges on surface of the coating. The composite particles include polyacrylate particles and first inorganic particles. The first inorganic particle is present between at least two of the polyacrylate particles.