公开(公告)号：US20230198015A1

公开(公告)日：2023-06-22

申请号：US18062583

申请日：2022-12-07

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian Li ,  Chengyong Liu ,  Yongsheng Guo ,  Jiawei Fu ,  Bobing Hu ,  Meng Cheng ,  Ang Fu

IPC: H01M10/0565 ,  H01M10/052 ,  C09K19/32

CPC classification number: H01M10/0565 ,  H01M10/052 ,  C09K19/32 ,  H01M2300/0082

Abstract: A supramolecular ionic liquid, a solid-state electrolyte membrane, a solid-state lithium metal battery, and an apparatus are provided. The supramolecular ionic liquid of this disclosure has a benzophenanthrene structure represented by formula (I), where R1 is selected from ether groups, polyether groups, halogenated ether groups, or halogenated polyether groups having 1 to 16 carbon atoms; and R2 is selected from ether groups or polyether groups having 1 to 16 carbon atoms. The supramolecular ionic liquid of this disclosure has an ionic conductivity as high as 10−3 S/cm at room temperature. A solid-state electrolyte membrane made therefrom also has an ionic conductivity as high as 10−3 S/cm at room temperature. This is close to performance of a liquid electrolyte, proposing a solution to the problem of low ionic conductivity in existing solid-state electrolytes.

公开(公告)号：US11831024B2

公开(公告)日：2023-11-28

申请号：US17810644

申请日：2022-07-05

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Ang Fu ,  Chengyong Liu ,  Yongsheng Guo ,  Jiawei Fu ,  Qian Li ,  Bobing Hu ,  Shengyuan Huang

IPC: H01M4/66 ,  H01M4/80 ,  H01M10/052 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/66 ,  H01M4/801 ,  H01M10/052 ,  H01M2004/027

Abstract: This application provides a polymer current collector, a preparation method thereof, and a secondary battery, battery module, battery pack, and apparatus associated therewith. The polymer current collector provided in this application includes polymer film layers, where the polymer film layers include a first polymer film layer and a second polymer film layer, a resistivity of the first polymer film layer is denoted as ρ1, a resistivity of the second polymer film layer is denoted as ρ2, and the current collector satisfies ρ1>ρ2. The polymer current collector in this application can induce to deposit of lithium metal from a low conductivity side to a high conductivity side, avoiding risks of depositing lithium ions on the surface of the current collector and thereby increasing cycle life of lithium metal batteries.

公开(公告)号：US20220367877A1

公开(公告)日：2022-11-17

申请号：US17810644

申请日：2022-07-05

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Ang Fu ,  Chengyong Liu ,  Yongsheng Guo ,  Jiawei Fu ,  Qian Li ,  Bobing Hu ,  Shengyuan Huang

IPC: H01M4/66 ,  H01M4/04 ,  H01M10/052 ,  H01M4/80

Abstract: This application provides a polymer current collector, a preparation method thereof, and a secondary battery, battery module, battery pack, and apparatus associated therewith. The polymer current collector provided in this application includes polymer film layers, where the polymer film layers include a first polymer film layer and a second polymer film layer, a resistivity of the first polymer film layer is denoted as ρ1, a resistivity of the second polymer film layer is denoted as ρ2, and the current collector satisfies ρ1>ρ2. The polymer current collector in this application can induce to deposit of lithium metal from a low conductivity side to a high conductivity side, avoiding risks of depositing lithium ions on the surface of the current collector and thereby increasing cycle life of lithium metal batteries.