公开(公告)号：US20200266431A1

公开(公告)日：2020-08-20

申请号：US16458973

申请日：2019-07-01

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Chengbo ZHANG ,  Hang CUI ,  Yuansen XIE

IPC: H01M4/485 ,  H01M10/0525

Abstract: The present application relates to an anode material, and an electrochemical device and an electronic device comprising the same. The anode material is a silicon-based anode material having a core-shell structure, where a core is silicon oxide, and the silicon oxide can be represented by the general formula SiOx (about 0

公开(公告)号：US20220199996A1

公开(公告)日：2022-06-23

申请号：US17690252

申请日：2022-03-09

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Qunchao LIAO ,  Hang CUI ,  Yuansen XIE ,  Chao WANG

IPC: H01M4/587 ,  H01M4/38 ,  H01M4/04 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/1395 ,  H01M4/1393 ,  H01M4/66

Abstract: A negative electrode material includes a silicon-based material and a carbon material. Peaks with a shift range of 1255˜1355 cm−1 and 1575˜1600 cm−1 in a Raman spectrum of the carbon material are a D peak and a G peak respectively. Peaks with a shift range of 1255˜1355 cm−1 and 1575˜1600 cm−1 in a Raman spectrum of the silicon-based material are the D peak and the G peak respectively. A scattering peak intensity ratio of D versus G peaks of the carbon material is A, and a scattering peak intensity ratio of D versus G peaks of the silicon-based material is B. 0.15≤A≤0.9, 0.8≤B≤2.0, and 0.2

公开(公告)号：US20220199988A1

公开(公告)日：2022-06-23

申请号：US17690264

申请日：2022-03-09

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

IPC: H01M4/38 ,  H01M4/134 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/1395

Abstract: An anode material includes silicon-containing particles including a silicon composite substrate and a polymer layer, the polymer layer coats at least a portion of the silicon composite substrate, wherein the polymer layer includes a carbon material. The anode material has good cycle performance, and the battery prepared with the anode material has better rate performance and lower expansion rate.

公开(公告)号：US20210391567A1

公开(公告)日：2021-12-16

申请号：US17460736

申请日：2021-08-30

Applicant: Ningde Amperex Technology Limited

Inventor： Qunchao LIAO ,  Hang CUI ,  Yuansen XIE

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/48 ,  H01M10/0525

Abstract: A negative electrode includes silicon-based particles and graphite particles, where a quantity of graphite particles present within a vertical distance of about 0 to 6 μm to respective edges of the silicon-based particles is N, and based on a total quantity of the silicon-based particles, more than about 50% of the silicon-based particles satisfy: 6≤N≤17. The negative electrode has good cycle performance, and a battery prepared by using the negative electrode has good rate performance and a low deformation rate.

公开(公告)号：US20200266428A1

公开(公告)日：2020-08-20

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 ,  H01M4/131 ,  H01M4/133 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0569

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 CF2a, CHFb and CH2c 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：US20200212427A1

公开(公告)日：2020-07-02

申请号：US16299409

申请日：2019-03-12

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Daoyi JIANG ,  Hang CUI ,  Yuansen XIE

IPC: H01M4/134 ,  H01M4/38 ,  H01M4/131 ,  H01M4/133 ,  H01M4/46 ,  H01M4/58 ,  H01M4/36 ,  H01M10/0525

Abstract: The present application relates to an anode active material and an anode, an electrochemical device and an electronic device using same. Specifically, the present application provides an anode active material, including a lithiated silicon-oxygen material and a coating layer, where there is at least a Si—O-M bond between the coating layer and the lithiated silicon-oxygen material, where M is selected from one or more of an aluminum element, a boron element and a phosphorus element. The anode active material of the present application has high stability and is suitable for aqueous processing to be prepared into an anode.

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：US20220271281A1

公开(公告)日：2022-08-25

申请号：US17742715

申请日：2022-05-12

Applicant: Ningde Amperex Technology Limited

Inventor： Qunchao LIAO ,  Hang CUI ,  Yuansen XIE

IPC: H01M4/38 ,  H01M4/583 ,  H01M4/36

Abstract: An anode material includes silicon-based particles and graphite particles, wherein the average sphericity degree of the graphite particles is A, the average sphericity degree of the silicon-based particles is B, and A and B meet: 0

公开(公告)号：US20220223835A1

公开(公告)日：2022-07-14

申请号：US17708508

申请日：2022-03-30

Applicant: Ningde Amperex Technology Limited

Inventor： Chao WANG ,  Qunchao LIAO ,  Hang CUI ,  Yuansen XIE

IPC: H01M4/131 ,  H01M4/62 ,  H01M4/485 ,  H01M4/66 ,  H01M10/0525

Abstract: A negative electrode includes a negative current collector and a negative active material layer. The negative active material layer includes a silicon-based material. A weight ratio R of the silicon-based material to a total weight of the negative active material layer and an absolute strength σ of the negative current collector satisfy the following formula: K=σ/(1.4×R+0.1), where K is a relation coefficient, and the relation coefficient is greater than or equal to 4,000 N/m. The electrochemical device can effectively mitigate XY expansion and deformation of the negative active material layer by using the foregoing negative electrode, thereby enhancing cycle performance and safety performance of the electrochemical device.

公开(公告)号：US20220199986A1

公开(公告)日：2022-06-23

申请号：US17690159

申请日：2022-03-09

Applicant: Ningde Amperex Technology Limited

Inventor： Ting ZHANG ,  Daoyi JIANG ,  Zhihuan CHEN ,  Hang CUI

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/48 ,  H01M10/0525

Abstract: A negative electrode material includes silicon-based particles. The silicon-based particles include a silicon-containing substrate and a polymer layer. The polymer layer exists on at least a part of a surface of the silicon-containing substrate. The polymer layer includes carbon nanotubes and alkali metal ions. The alkali metal ions include Li+, Na+, K+, or any combination thereof. Based on a total weight of the silicon-based particles, a content of the alkali metal ions is approximately 50˜5,000 ppm. A lithium-ion battery prepared by using the negative active material achieves a lower resistance, higher first-time efficiency, higher cycle performance, and higher rate performance.