Negative electrode for lithium secondary battery and lithium secondary battery comprising same
US12237496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2020 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Mar 21, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates a negative electrode for a lithium secondary battery, and a lithium secondary battery comprising same, wherein the negative electrode for a lithium secondary battery comprises a current collector, and a negative electrode active material layer including a first layer formed on the current collector and a second layer formed on the first layer, the first layer containing a first carbon-based negative electrode active material, and the second layer containing a second carbon-based negative electrode active material, wherein the degree of divergence (DD) value of the first layer is 30-90% of the DD value of the negative electrode active material layer, the DD value is defined by formula 1 below. DD (Degree of Divergence)=(Ia/Itotal)*100 [Formula 1]
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.