Rechargeable lithium battery
US8273478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2009 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Dec 5, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rechargeable lithium battery includes an electrolyte including an additive such as an ethylene carbonate-based compound represented by Chemical Formula 1 and a silicon-included compound, and a negative electrode including a negative active material including an active element selected from the group consisting of Si, Sn, Ga, Cd, Al, Pb, Zn, Bi, In, Mg, and Ge.In Chemical formula 1, X and Y are independently selected from the group consisting of hydrogen, a halogen, and a C1 through C5 fluoroalkyl, provided that at least one of X and Y is selected from the group consisting of a halogen and a C1 through C5 fluoroalkyl.The rechargeable lithium battery has a suppressed volume expansion characteristic due to a high-capacity negative active material, and has excellent reliability and cycle-life characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.