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：US11217822B2

公开(公告)日：2022-01-04

申请号：US16972824

申请日：2020-06-17

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/0585

Abstract: The present application provides a preparation method for a solid electrolyte, including: acquiring an initial reaction mixture including a lithium precursor, a central atom ligand and an organic solvent; acquiring a modified solution including a borate ester and the organic solvent; mixing the initial reaction mixture and the modified solution, and drying to acquire an initial product; performing a grinding, cold press and heat treatment to the initial product to obtain the solid electrolyte. In the preparation method provided by the present application, a B and O co-doped sulphide solid electrolyte can be obtained by modifying the sulphide solid electrolyte with the borate ester as a doping raw material. The ionic conductivity of the prepared sulphide solid electrolyte is significantly improved, which is also conducive to improvement of energy density of the all-solid-state batteries.

公开(公告)号：US11929509B2

公开(公告)日：2024-03-12

申请号：US17561748

申请日：2021-12-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Yongsheng Guo ,  Tao Zhang ,  Chengyong Liu ,  Jun Yang

IPC: H01M4/62 ,  B22F1/145 ,  H01M4/38 ,  H01M10/0525

CPC classification number: H01M4/626 ,  B22F1/145 ,  H01M4/382 ,  H01M10/0525 ,  B22F2301/054 ,  H01M2220/20

Abstract: Disclosed are a lithium metal composite electrode material for a lithium metal battery, a preparation method for the same, and an electrode, battery, battery module, battery pack and apparatus comprising the same. The lithium metal composite electrode material comprises: lithium metal particles and a lithium-containing conductive layer serving as a supporting framework, the supporting framework being filled with the lithium metal particles; wherein the lithium-containing conductive layer comprises an inorganic lithium compound and a lithium alloy. The lithium metal composite electrode material can solve the problems that, when lithium metal is used as a negative electrode, the electrolyte is easily consumed, and lithium dendrites are easily produced, deposited and dissolved to change electrode thickness, which in turn affects the cycle stability, electrical performance and structural stability of the battery, so as to achieve the purpose of improving the structural stability and cycle stability of the lithium metal electrode.

公开(公告)号：US11888115B2

公开(公告)日：2024-01-30

申请号：US17550946

申请日：2021-12-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengyong Liu ,  Yongsheng Guo ,  Chengdu Liang ,  Quan Fan

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0569 ,  H01M4/38 ,  H01M4/134 ,  H01M4/40 ,  H01M4/525

CPC classification number: H01M10/0567 ,  H01M4/134 ,  H01M4/382 ,  H01M10/052 ,  H01M10/0569 ,  H01M4/405 ,  H01M4/525 ,  H01M2300/0025

Abstract: This application provides an electrolytic solution and a lithium metal battery containing the electrolytic solution. The electrolytic solution includes a lithium salt, an organic solvent, and an additive. The additive includes a sultam compound represented by Structural Formula I. R is selected from substituted or unsubstituted C1 to C10 hydrocarbyls, where a substituent is selected from a phenyl, C1 to C6 alkyls, or C1 to C6 alkenyls. X is a sulfur atom or a phosphorus atom. R1 and R2 each are independently selected from an oxygen atom, a fluorine atom, a chlorine atom, a bromine atom, and substituted or unsubstituted C1 to C10 hydrocarbyls. Both R1 and R2 are not oxygen atoms concurrently.

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：US11764360B2

公开(公告)日：2023-09-19

申请号：US17559378

申请日：2021-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/62 ,  H01M4/73 ,  H01M4/04 ,  H01M10/0525 ,  C08J5/18 ,  H01M4/02

CPC classification number: H01M4/623 ,  C08J5/18 ,  H01M4/0404 ,  H01M4/73 ,  C08J2353/00 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2220/20

Abstract: This application provides a negative electrode plate, a lithium metal battery, and an apparatus including the lithium metal battery. The negative electrode plate includes a negative electrode current collector and a lithium-metal negative electrode disposed on at least one surface of the negative electrode current collector, where a polymer protective film is disposed on a surface of the lithium-metal negative electrode away from the negative electrode current collector, the polymer protective film includes a citric acid copolymer, and a number-average molecular weight Mn of the citric acid copolymer is 10,000 to 1,000,000. In this application, a polymer protective film with high tensile strength, high puncture strength, high elongation, and high electrolyte holding capacity may be formed on the surface of the lithium-metal negative electrode in the negative electrode plate.

公开(公告)号：US20220109180A1

公开(公告)日：2022-04-07

申请号：US17553836

申请日：2021-12-17

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian LI ,  Chengyong Liu ,  Yongshen Guo ,  Jiawei Fu ,  Bobing Hu ,  Meng Cheng

IPC: H01M10/0525 ,  H01M4/1395 ,  H01M10/0565

Abstract: The present application discloses a lithium metal battery, a process for preparing the same, an apparatus containing the lithium metal battery, and a negative electrode plate. The lithium metal battery includes a positive electrode plate, a negative electrode plate and an electrolyte, the positive electrode plate including a positive electrode current collector and a positive electrode active material layer arranged on at least one surface of the positive electrode current collector and comprising a positive electrode active material, wherein the negative electrode plate includes a polymer material base layer; and a lithium-based metal layer that is directly bonded to at least one surface of the polymer material base layer.

公开(公告)号：US20240421355A1

公开(公告)日：2024-12-19

申请号：US18809341

申请日：2024-08-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hansen Wang ,  Chengyong Liu ,  Shengyuan Huang ,  Bobing Hu ,  Zhangdi Xie ,  Shangju Liao

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/38 ,  H01M10/052

Abstract: Provided are a non-aqueous electrolyte, a secondary battery, a battery module, a battery pack, and an electrical device. The non-aqueous electrolyte includes orthocarbonate, chain carbonate, cyclic carbonate, and lithium salt, a mass content of the orthocarbonate is 10% to 80%, and at least one of the chain carbonate or the cyclic carbonate is fluoride. A central carbon atom of the orthocarbonate is bonded to four oxygen atoms, each of which is further bonded to an alkyl or halogenated alkyl chain, which plays an electron attraction role for lone pair electrons of the oxygen atoms, and increases steric hindrance surrounding the oxygen atoms, weakening the capability of the oxygen atoms in binding to lithium ions, and facilitating SEI film formation dominated by anion decomposition.

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.