公开(公告)号：US20230027113A1

公开(公告)日：2023-01-26

申请号：US17951480

申请日：2022-09-23

Applicant: Ningde Amperex Technology Limited

Inventor： Daguang LI ,  Maohua CHEN ,  Yuansen XIE

IPC: H01M4/38 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/134

Abstract: An assembly includes: an electrolytic solution, where the electrolytic solution includes a solvent and an additive, the additive includes fluoroethylene carbonate, and a weight percent of the fluoroethylene carbonate in a total mass of the solvent and the additive is 10% to 30%; and a negative electrode, where the negative electrode contains an active material and a protection layer that covers the active material. The protection layer is located between the electrolytic solution and the active material, the protection layer is in contact with the electrolytic solution, the active material contains lithium metal, and the protection layer contains silicon. The electrode assembly greatly improve the cycle performance of a lithium metal battery.

公开(公告)号：US20220302461A1

公开(公告)日：2022-09-22

申请号：US17708286

申请日：2022-03-30

Applicant: Ningde Amperex Technology Limited

Inventor： Wenhao GUAN ,  Maohua CHEN ,  Yuansen XIE

IPC: H01M4/66 ,  H01M10/052 ,  H01F1/055

Abstract: A magnetic current collector includes a permanent magnet material layer. In the permanent magnet material layer, remanence intensity of a permanent magnet material is 0 T to 2 T. The magnetic current collector can introduce a magnetic field into the lithium metal battery. The magnetic field interacts electromagnetically with an electric field exerted by the battery to quicken a mass transfer process of lithium ions at an interface between a negative electrode and an electrolytic solution, homogenize a current density generated by a lithium-ion flow on a surface of the negative electrode, quicken a mass transfer process of lithium ions in a direction parallel to the current collector, and homogenize the distribution of lithium ions, so as to suppress lithium dendrites and improve the cycle performance of the lithium metal battery.

公开(公告)号：US20220199969A1

公开(公告)日：2022-06-23

申请号：US17690257

申请日：2022-03-09

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Daoyi JIANG ,  Zhihuan CHEN ,  Hang CUI ,  Yuansen XIE

IPC: H01M4/134 ,  H01M4/62

Abstract: An anode material includes a silicon composite substrate, wherein the Dv50 of the silicon composite substrate is from 2.5 μm to 15 μm, and the particle size distribution of the silicon composite substrate meets 0.1≤Dn10/Dv50≤0.6. The anode material has good cycle performance, and the battery prepared with the anode material has good rate performance and lower swelling rate.

公开(公告)号：US20220140322A1

公开(公告)日：2022-05-05

申请号：US17577739

申请日：2022-01-18

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Zhihuan CHEN ,  Daoyi JIANG ,  Hang CUI ,  Yuansen XIE

IPC: H01M4/36 ,  H01M4/60 ,  H01M4/48 ,  H01M10/0525

Abstract: An anode material includes silicon-containing particles including a silicon composite substrate and an oxide MeOy layer, wherein the oxide MeOy layer is coated on at least a portion of the silicon composite substrate, wherein Me includes at least one of Al, Si, Ti, Mn, V, Cr, Co or Zr, and y is 0.5 to 3; and wherein the oxide MeOy layer includes a carbon material. The anode material has good cycle performance, and the battery prepared from the anode material has better rate performance and lower swelling rate.

公开(公告)号：US20220115644A1

公开(公告)日：2022-04-14

申请号：US17265871

申请日：2020-01-02

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Jia TANG ,  Pengyang FENG ,  Jiali DONG ,  Yuansen XIE

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/525 ,  H01M4/62

Abstract: An anode including a current collector and an anode active material layer on the current collector are provided. The anode active material layer includes first oriented particles having a first tilt angle θ1 inclined with respect to the direction of the current collector, and second oriented particles having a second tilt angle θ2 inclined with respect to the direction of the current collector. The first tilt angle θ1 and the second tilt angle θ2 are different and both not greater than 70°.

公开(公告)号：US20210351405A1

公开(公告)日：2021-11-11

申请号：US17281042

申请日：2020-03-11

Applicant: Ningde Amperex Technology Limited

Inventor： Pengyang FENG ,  Jiali DONG ,  Jia TANG ,  Yuansen XIE

IPC: H01M4/583 ,  H01M4/62 ,  H01M4/66 ,  H01M4/36

Abstract: An anode material having 0.8≤0.06×(Dv50)2−2.5×Dv50+Dv99≤12 (1); and 1.2≤0.2×Dv50−0.006×(Dv50)2+BET≤5 (2), where Dv50 represents a value in the volume-based particle size distribution of the anode material that is greater than the particle size of 50% of the particles, Dv99 represents a value in the volume-based particle size distribution of the anode material that is greater than the particle size of 99% of the particles, and BET is a specific surface area of the anode material, wherein Dv50 and Dv99 are expressed in μm and BET is expressed in m2/g. The anode material is capable of significantly improving the rate performance of electrochemical devices.

公开(公告)号：US20250079442A1

公开(公告)日：2025-03-06

申请号：US18953394

申请日：2024-11-20

Applicant: Ningde Amperex Technology Limited

Inventor： Zhihuan CHEN ,  Daoyi JIANG ,  Hang CUI ,  Yuansen XIE

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/48 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525

Abstract: An anode active material provided by the present application includes anode active particles having silicon element, a first conductive material and a second conductive material, wherein the first conductive material and the second conductive material form a three-dimensional conductive network structure, at least a portion of the anode active particles are accommodated in the three-dimensional conductive network structure, and a ratio of the total surface area of the first conductive material to the total surface area of the anode active particles is less than 1000.

公开(公告)号：US20240266537A1

公开(公告)日：2024-08-08

申请号：US18622258

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Zigui ZHENG ,  Fujin TAN ,  Zheng YI ,  Yuansen XIE

IPC: H01M4/583 ,  H01M4/02 ,  H01M4/36

CPC classification number: H01M4/583 ,  H01M4/366 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative active material, a negative electrode plate containing same, an electrochemical device, and an electrical device. The negative active material includes a hard carbon material. The hard carbon material includes a plurality of micropores and an average delithiation potential vs Li/Li+ of the hard carbon material is 0.15 V to 0.40 V.

公开(公告)号：US20230299277A1

公开(公告)日：2023-09-21

申请号：US18324419

申请日：2023-05-26

Applicant: Ningde Amperex Technology Limited

Inventor： Wenbo JIN ,  Jiali DONG ,  Lihong HE ,  Yuansen XIE

IPC: H01M4/36 ,  H01M10/0525 ,  H01M10/0566

CPC classification number: H01M4/366 ,  H01M10/0525 ,  H01M10/0566 ,  H01M2004/021

Abstract: An electrochemical apparatus includes an electrolyte and a negative electrode plate. 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. The negative electrode active material layer contains a negative electrode active material, and a tortuosity T of the negative electrode active material layer satisfies the following relation: 1

公开(公告)号：US20230197958A1

公开(公告)日：2023-06-22

申请号：US18173295

申请日：2023-02-23

Applicant: Ningde Amperex Technology Limited

Inventor： Lihong HE ,  Jia TANG ,  Jiali DONG ,  Yuansen XIE

IPC: H01M4/587 ,  C01B32/20

CPC classification number: H01M4/587 ,  C01B32/20 ,  H01M2004/021

Abstract: A negative active material includes a carbon material. The carbon material satisfies the following relationship: 6