Invention Grant
- Patent Title: Negative electrode sheet and method for preparing the same, secondary battery, battery module, battery pack, and device
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Application No.: US17866507Application Date: 2022-07-16
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Publication No.: US11646417B2Publication Date: 2023-05-09
- Inventor: Zijian Lv , Jiazheng Wang
- Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
- Applicant Address: CN Ningde
- Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
- Current Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
- Current Assignee Address: CN Ningde
- Agency: Anova Law Group, PLLC
- Main IPC: H01M4/583
- IPC: H01M4/583 ; H01M4/04 ; H01M4/38 ; H01M4/62 ; H01M10/0525 ; H01M4/36 ; H01M4/02

Abstract:
A negative electrode sheet includes a current collector, and a first active material layer and a second active material layer that are sequentially provided on at least one surface of the current collector. The first active material layer includes a first negative electrode active material. Particle sizes of the first negative electrode active material satisfy: 0.02≤A1=(Dn10)1/(Dv50)1≤0.2. The second active material layer includes a second negative electrode active material. Particle sizes of the second negative electrode active material satisfy: 0.02≤A2=(Dn10)2/(Dv50)2≤0.3; and A1 and A2 satisfy 1
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