Secondary battery and power consumption apparatus including the same preliminary class
US12199274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2022 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Nov 29, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a secondary battery including a negative electrode sheet. The negative electrode sheet includes: a negative electrode current collector; a first negative film layer provided on at least one surface of the negative electrode current collector; and a second negative film layer provided on a surface of the first negative film layer. The first negative film layer includes a first negative active material and a first conductive agent, and the first negative active material includes a silicon-based material. A mass proportion of the silicon-based material in the first negative film layer is greater than or equal to 30%, and a mass proportion of the first conductive agent in the first negative film layer is greater than or equal to 25%. The secondary battery of the present disclosure does not easily expand and has good cycle performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.