Negative electrode active material, and negative electrode and lithium secondary battery comprising same
US11476453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Feb 13, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative electrode active material including artificial graphite secondary particles comprising artificial graphite primary particles having an average particle diameter (D50) of 10 nm to 9 μm, said artificial graphite secondary particles being formed by granulating said artificial graphite primary particles, wherein a value (V1) obtained by dividing a minimum particle diameter (Dmin) of the secondary particles by the average particle diameter (D50) of the initial particles is 0.50 to 0.8, and a value (V2) obtained by dividing the minimum particle diameter (Dmin) of the secondary particles by an average particle diameter (D50) of the secondary particles is 0.23 to 0.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.