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.