公开(公告)号：US20240347776A1

公开(公告)日：2024-10-17

申请号：US18755332

申请日：2024-06-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hansen WANG ,  Chengyong LIU ,  Zhangdi Xie ,  Shengyuan Huang ,  Bobing Hu

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: Provided is an electrolyte, including a first solvent represented by formula I and a second solvent selected from one or more of formula II and formula III, where R1 is selected from C1-C6 fluoroalkyl; R2 is selected from a hydrogen atom, C1-C6 alkyl or C1-C6 fluoroalkyl; n represents 1 or 2; and R3 to R10 are each independently selected from a hydrogen atom, a fluorine atom, C1-C6 alkyl, or C1-C6 fluoroalkyl. The electrolyte of the disclosure can improve cycle stability and safety of the battery. A secondary battery including the electrolyte, a battery module, a battery pack, and an electrical device are also disclosed.

公开(公告)号：US20230327220A1

公开(公告)日：2023-10-12

申请号：US18206560

申请日：2023-06-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bobing HU ,  Jieliang ZOU ,  Chengyong LIU ,  Jiawei FU ,  Xiaoning HE ,  Shengyuan HUANG ,  Chengbin ZHONG

IPC: H01M4/04 ,  H01M4/131 ,  H01M10/42 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M10/054

CPC classification number: H01M10/4235 ,  H01M4/0435 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/054 ,  H01M10/0569 ,  H01M2300/0034

Abstract: This application provides a battery, and a method and apparatus for curbing battery gassing, and pertains to the field of battery technologies. The battery includes a battery housing, a positive electrode plate, a negative electrode plate, and a non-aqueous electrolyte. A gas reducer is disposed inside the battery housing, the gas reducer includes at least one of alkali metal and alkali metal alloy, and the gas reducer is in no contact with or in non-electrical contact with the negative electrode plate. The apparatus is provided with the foregoing battery. The method for curbing battery gassing includes disposing the gas reducer inside the battery housing, such that the gas reducer is in no contact with or in non-electrical contact with the negative electrode plate. Such battery features simple configuration, no limitation from gas scale effect, timely degassing, and high degassing capacity.

公开(公告)号：US20230275236A1

公开(公告)日：2023-08-31

申请号：US18311363

申请日：2023-05-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bobing HU ,  Shengyuan HUANG ,  Chengyong LIU ,  Jiawei FU ,  Xiaoning HE ,  Jieliang ZOU ,  Chengbin ZHONG

IPC: H01M4/66 ,  H01M4/04

CPC classification number: H01M4/667 ,  H01M4/661 ,  H01M4/0404

Abstract: A current collector includes a current collector body and a lithiophilic layer applied on a surface of the current collector body. The lithiophilic layer has lithium affinity and comprises a lithiophilic material. The lithiophilic material comprises an internal structure and an external structure, and the internal structure is a cavity.

公开(公告)号：US20240234818A1

公开(公告)日：2024-07-11

申请号：US18589233

申请日：2024-02-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hansen WANG ,  Chengyong LIU ,  Shengyuan HUANG ,  Xian HUANG ,  Wenwen XUE

IPC: H01M10/0569 ,  C07D307/04 ,  C07D307/10 ,  C07D317/16 ,  C07D319/06 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  C07D307/04 ,  C07D307/10 ,  C07D317/16 ,  C07D319/06 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2220/20 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: An electrolyte containing a solvent including at least one compounds of formula I, wherein A1 is an oxygen atom or a single bond, A2 is a single bond or CHR4, R1 and R2 are each independently a hydrogen atom, C1-6 alkyls or a C1-6 fluoroalkyls, R3 and R4 are each independently a hydrogen atom, a fluorine atom, C1-6 alkyls or C1-6 fluoroalkyls, A1 and A2 cannot both be single bonds simultaneously, and only one of R1 to R4 includes a fluorine atom is described. The electrolyte can make a metal negative electrode secondary battery have good cycling performance and good discharge capacity retention at low temperature.

公开(公告)号：US20220200004A1

公开(公告)日：2022-06-23

申请号：US17582401

申请日：2022-01-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bobing HU ,  Chengyong LIU ,  Yongsheng GUO ,  Meng CHENG ,  Jiawei FU ,  Qian LI ,  Chengdu LIANG

IPC: H01M4/62 ,  H01M10/0562 ,  H01M10/0525 ,  H01M4/134

Abstract: This application provides a lithium secondary battery and a negative electrode plate for the lithium secondary battery. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector, where a surface of the negative electrode active material layer closer to the current collector is provided with an elastic coating. And the elastic coating includes an elastic polymer and a conductive agent. At a pressure of 1 MPa to 20 MPa, the elastic coating has a compression deformation of 20% to 80% and an elastic modulus of 1 MPa to 800 MPa. And optionally, at the pressure of 1 MPa to 20 MPa, the elastic coating has a compression deformation of 30% to 60% and an elastic modulus of 5 MPa to 100 MPa.

公开(公告)号：US20230352689A1

公开(公告)日：2023-11-02

申请号：US18349954

申请日：2023-07-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaoning HE ,  Wenwen XUE ,  Chengyong LIU ,  Jieliang ZOU ,  Chengbin ZHONG

IPC: H01M4/04 ,  H01M4/60 ,  H01M4/36 ,  H01M10/0587

CPC classification number: H01M4/602 ,  H01M4/0466 ,  H01M4/366 ,  H01M10/0587 ,  H01M2004/028

Abstract: An electrode assembly includes a positive electrode plate containing a positive active material and a negative electrode plate. The positive electrode plate includes a positive bend portion and a positive flat straight portion connected to the positive bend portion. At least a part of the positive active material of the positive bend portion includes a polymer coating layer capable of obstructing migration of active ions. A ratio of an ionic conductivity λ1 of the first bend portion to an ionic conductivity λ2 of the positive flat straight portion satisfies 0 ≤ λ1/λ2

公开(公告)号：US20230223545A1

公开(公告)日：2023-07-13

申请号：US18125174

申请日：2023-03-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengyong LIU ,  Meng CHENG ,  Ang FU ,  Bobing HU ,  Yongsheng GUO ,  Quan FAN

IPC: H01M4/62 ,  H01M4/134 ,  H01M4/38 ,  H01M10/052 ,  H01M4/04 ,  H01M4/1395

CPC classification number: H01M4/628 ,  H01M4/134 ,  H01M4/382 ,  H01M10/052 ,  H01M4/0402 ,  H01M4/1395 ,  H01M2004/027

Abstract: Embodiments of the present application provide a lithium metal negative electrode, a preparation method therefor and related lithium metal battery and device. The lithium metal negative electrode may comprise: a negative electrode current collector; at least one lithium-based metal layer provided on at least one surface of the negative electrode current collector; and an ion-conducting polymer modification layer, which is located on the surface of one of the at least one lithium-based metal layer and comprises at least catalytic amount of a Lewis acid, the Lewis acid containing cations of a metal capable of forming an alloy-type active material with lithium.

公开(公告)号：US20220149353A1

公开(公告)日：2022-05-12

申请号：US17583084

申请日：2022-01-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengyong LIU ,  Yongsheng GUO ,  Chuying OUYANG

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/134 ,  H01M4/485 ,  H01M4/40 ,  H01M10/0525

Abstract: A three-dimensional composite metallic lithium negative electrode, a metallic lithium battery and an apparatus are disclosed. The composite metallic lithium negative electrode includes metallic lithium particles and a three-dimensional polymer framework, where the metallic lithium particles are filled in the three-dimensional polymer framework, and the three-dimensional polymer framework includes lithium-philic a fragments, active sites and polymer-containing moieties. The present application improves a volume effect of the metallic lithium negative electrode in charge and discharge process, which can inhibit side reactions of metallic lithium and electrolyte; increase a specific surface area of the metallic lithium negative electrode, and introduce lithium-philic nano-sites, thereby can guide a uniform deposition of the metallic lithium and effectively inhibit generation of lithium dendrites. In addition, the three-dimensional framework coated with active lithium can effectively reduce risks of brittle SEI film faced by traditional solutions.

公开(公告)号：US20220123353A1

公开(公告)日：2022-04-21

申请号：US17564429

申请日：2021-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jiawei FU ,  Chengyong LIU ,  Bobing HU ,  Qian LI ,  Meng CHENG ,  Yongsheng GUO

IPC: H01M10/056 ,  H01M10/0525

Abstract: The solid electrolyte membrane in this application has a first surface and a second surface opposite the first surface, where the first surface is provided with several micropores that extend into an interior of the solid electrolyte membrane without penetrating to the second surface. This application further provides a solid-state lithium metal battery, battery module, battery pack, and apparatus containing such solid electrolyte membrane. In the solid electrolyte membrane provided in this application, the micropores provided on the first surface of the solid electrolyte membrane do not penetrate to the opposite second surface, so that lithium ions can be induced to deposit in the micropores. This reduces the risk of lithium dendrites growing or even penetrating through the solid electrolyte membrane due to non-uniform deposition of lithium ions at other locations, thereby preventing short circuit of a solid-state lithium metal battery.

公开(公告)号：US20220109189A1

公开(公告)日：2022-04-07

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 ,  H01M10/0569 ,  H01M10/052

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.