Negative active material for lithium secondary battery and lithium secondary battery including the same
US10553863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2018 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | May 5, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative active material for a lithium secondary battery and a lithium secondary battery including the same are provided. The negative active material may be a silicon (Si)-based alloy negative active material. In some embodiments, the Si-based alloy negative active material may include Si, iron (Fe), copper (Cu), and aluminum (Al), and may have a Si single phase and a first alloy phase, the first alloy phase being represented by a formula of AlxCuy, where x<y. In some embodiments, the Si-based alloy negative active material may include Si, Fe, and Cu, and may include a Si single phase, a first alloy phase, and a second alloy phase, the first alloy phase being represented by a formula of Cu15Si4, and the second alloy phase being represented by a formula of Cu3Fe17.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.