公开(公告)号：US20220384861A1

公开(公告)日：2022-12-01

申请号：US17816426

申请日：2022-07-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Bobing Hu ,  Shengyuan Huang ,  Chengyong Liu ,  Jiawei Fu ,  Xiaoning He ,  Jieliang Zou ,  Chengbin Zhong

IPC: H01M10/42 ,  H01M4/62 ,  H01M4/38 ,  H01M4/134 ,  H01M4/1395 ,  H01M10/052

Abstract: A negative-electrode plate, a preparation method thereof, and a secondary battery, a battery module, a battery pack, and an electric apparatus including such negative-electrode plate are provided. The negative-electrode plate includes an alkali metal layer and a polymer film layer provided on at least one surface of the alkali metal layer. Surface resistivity of the polymer film layer gradually increases in a thickness direction of the polymer film layer away from the alkali metal layer. When the negative-electrode plate is used in a secondary battery, lithium dendrites can be effectively inhibited.

公开(公告)号：US12113167B2

公开(公告)日：2024-10-08

申请号：US18311904

申请日：2023-05-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bobing Hu ,  Chengyong Liu ,  Shangju Liao ,  Xiaoning He ,  Wenwen Xue ,  Zhangdi Xie ,  Shengyuan Huang ,  Jieliang Zou

IPC: H01M10/052 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/0567

CPC classification number: H01M10/0562 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/0567 ,  H01M2220/20 ,  H01M2300/0068 ,  H01M2300/0082 ,  H01M2300/0091

Abstract: A composite electrolyte, including a sulfide electrolyte, a polymer electrolyte, and a functional additive material are provided. In some embodiments, the functional additive material is selected from polymers represented by the following structural R1—O—R2-A. In some embodiments, R1 is selected from at least one of polyvinyl group, polypropylene group, polyacrylate group, polyvinylcarbonate group, polyacrylonitrile group, and polystyrene group; R2 is a straight-chain or branched alkyl group with 3-10 carbon atoms; A is selected from at least one aromatic hydrocarbon group of benzene group, biphenyl group, triphenyl group, naphthalene group, anthracene group, phenanthrene group, and pyrene group; and X is selected from at least one of hydrogen atom, halogen atom, mercapto group, hydroxyl group, amine group, and aldehyde group.

公开(公告)号：US20240047736A1

公开(公告)日：2024-02-08

申请号：US18311904

申请日：2023-05-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bobing Hu ,  Chengyong Liu ,  Shangju Liao ,  Xiaoning He ,  Wenwen Xue ,  Zhangdi Xie ,  Shengyuan Huang ,  Jieliang Zou

IPC: H01M10/0562 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/052

CPC classification number: H01M10/0562 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/052 ,  H01M2220/20 ,  H01M2300/0091 ,  H01M2300/0068 ,  H01M2300/0082

Abstract: A composite electrolyte, including a sulfide electrolyte, a polymer electrolyte, and a functional additive material are provided. In some embodiments, the functional additive material is selected from polymers represented by the following structural R1—O—R2-A. In some embodiments, R1 is selected from at least one of polyvinyl group, polypropylene group, polyacrylate group, polyvinylcarbonate group, polyacrylonitrile group, and polystyrene group; R2 is a straight-chain or branched alkyl group with 3-10 carbon atoms; A is selected from at least one aromatic hydrocarbon group of benzene group, biphenyl group, triphenyl group, naphthalene group, anthracene group, phenanthrene group, and pyrene group; and X is selected from at least one of hydrogen atom, halogen atom, mercapto group, hydroxyl group, amine group, and aldehyde group.

公开(公告)号：US20230307712A1

公开(公告)日：2023-09-28

申请号：US18322604

申请日：2023-05-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaoning He ,  Wenwen Xue ,  Chengyong Liu ,  Chengbin Zhong

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M50/46 ,  H01M10/0568 ,  H01M10/0565 ,  H01M4/40 ,  H01M4/58 ,  H01M4/525 ,  H01M4/505 ,  H01M50/609 ,  H01M50/204

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M50/46 ,  H01M10/0568 ,  H01M10/0565 ,  H01M4/405 ,  H01M4/5825 ,  H01M4/525 ,  H01M4/505 ,  H01M50/609 ,  H01M50/204 ,  H01M2220/20 ,  H01M2300/0042 ,  H01M2300/0085 ,  H01M2004/027

Abstract: An electrode assembly and a preparation method thereof, a secondary battery, a battery module, a battery pack, and an electric apparatus are provided. The electrode assembly provided by this application includes a positive electrode, a negative electrode, and a separator located between the positive electrode and the negative electrode, where the positive electrode and the separator contain a solid electrolyte, a liquid electrolyte is present between the separator and the negative electrode, and a mass ratio of the solid electrolyte to the liquid electrolyte is 1:1 to 8:1, optionally 2:1 to 6:1.