公开(公告)号：US12191478B2

公开(公告)日：2025-01-07

申请号：US17274810

申请日：2019-11-19

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Zhihuan Chen ,  Daoyi Jiang ,  Hang Cui ,  Yuansen Xie

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

Abstract: The present application relates to an anode active material and a preparation method thereof, and a device using the anode active material. The 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. The capacity retention rate and expansion ratio of the anode active material with progression of the cycle are significantly improved.

公开(公告)号：US11223041B2

公开(公告)日：2022-01-11

申请号：US16393182

申请日：2019-04-24

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Daoyi Jiang ,  Zhihuan Chen ,  Hang Cui ,  Yuansen Xie

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/134 ,  H01M4/131 ,  H01M4/133 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/62

Abstract: The present application relates to an anode active material and an anode, an electrochemical device and an electronic device using the same. Specifically, the present application provides an anode active material, including a lithiated silicon-oxygen material and a coating layer, where the coating layer and the lithiated silicon-oxygen material at least have one or more structural units selected from formulae CF2a, CHFb and CH2c therebetween, where a, b, and c are integers greater than or equal to 6. The anode active material of the present application has high stability and is suitable for being subjected to aqueous processing to obtain the anode.

公开(公告)号：US12183915B2

公开(公告)日：2024-12-31

申请号：US17440723

申请日：2020-03-05

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Zhihuan Chen ,  Daoyi Jiang ,  Hang Cui ,  Yuansen Xie

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/48 ,  H01M4/587 ,  H01M10/0525

Abstract: The present application relates to an anode material, and an electrochemical device and an electronic device using the same. The anode material of the present application includes: a silicon compound SiOx, where x is 0.5-1.5; an oxide MeOy layer, the MeOy layer coating at least a portion of the silicon compound SiOx, where Me includes at least one of Al, Si, Ti, Mn, V, Cr, Co or Zr, where y is 0.5-3; and a carbon nanotube layer, the carbon nanotube layer coating at least a portion of the MeOy layer. The anode material can significantly enhance the cycle performance and rate performance of the electrochemical device, and significantly reduce the impedance of the electrochemical device.

公开(公告)号：US20230080891A1

公开(公告)日：2023-03-16

申请号：US17986046

申请日：2022-11-14

Applicant: Ningde Amperex Technology Limited

Inventor： Congrong Chen ,  Zhihuan Chen ,  Hang Cui ,  Yuansen Xie

IPC: H01M50/126 ,  B32B7/12 ,  B32B5/02 ,  B32B27/12 ,  B32B15/14 ,  B32B27/34 ,  B32B27/36 ,  B32B27/32 ,  B32B27/18 ,  H01M50/105 ,  H01M50/119 ,  H01M50/122 ,  H01M50/121 ,  H01M50/128 ,  H01M50/129 ,  H01M50/133 ,  H01M4/38 ,  H01M4/48 ,  H01M4/36 ,  H01M4/587

Abstract: A packaging film including a protective layer, a first bonding layer, a metal layer. a second bonding layer and a sealing layer. The protective layer, the first bonding layer, the metal layer. the second bonding layer, and the sealing layer are sequentially stacked. The protective layer includes a polymer resin layer and a carbon material.

公开(公告)号：US20230021755A1

公开(公告)日：2023-01-26

申请号：US17951570

申请日：2022-09-23

Applicant: Ningde Amperex Technology Limited

Inventor： Zhihuan Chen ,  Daoyi Jiang ,  Ting Yi ,  Hang Cui

IPC: H01M4/134 ,  H01M4/38 ,  H01M4/48

Abstract: A negative electrode plate includes a current collector and an active substance layer provided on the current collector, where the active substance layer includes a silicon-based material, and a proportion by mass of element silicon in the active substance layer has a minimum value X1 and a maximum value X2 among different locations of a same area size, where a value of X1/X2 is M, and M≥0.7; and a weight loss rate of the active substance layer under thermogravimetric (TG) analysis within 800° C. has a minimum value Y1 and a maximum value Y2 among different locations of a same area size, where a value of Y1/Y2 is N, and N≥0.7. In this disclosure, the silicon-based material and a binder in the active substance layer are uniformly dispersed, improving C-rate performance and cycling performance of the electrochemical apparatus and reducing swelling of an electrode assembly.