Negative electrode sheet and method for preparing the same, secondary battery, battery module, battery pack, and device
US11646417B2 · kind B2 · utility
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Key dates
| Filing date | Jul 16, 2022 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Jul 16, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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<A2/A1<2.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.