Negative active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same
US9172081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Nov 13, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a negative active material for a rechargeable lithium battery, including an inner layer including a material being capable of doping and dedoping lithium, a carbon layer outside the inner layer, and an outer layer disposed on the carbon layer and including a material being capable of doping and dedoping lithium. The materials being capable of doping and dedoping lithium may be the same or different from each other. The invention further relates to a method of preparing the negative active material including: preparing a tube-shaped template with a hollow part; forming an outer layer including a material which can dope and dedope lithium inside the template; forming an inner precursor layer including a material which can dope and dedope lithium modified with an organic functional group inside the outer layer; annealing the template; and removing the template.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.