Layered cathode materials for lithium ion rechargeable batteries
US7205072B2 · kind B2 · utility
101Cited by
3References
20Claims
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Key dates
| Filing date | Oct 31, 2003 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Mar 31, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A number of materials with the composition Li1+xNiαMnβCoγM′δO2−zFz (M′=Mg,Zn,Al,Ga,B,Zr,Ti) for use with rechargeable batteries, wherein x is between about 0 and 0.3, α is between about 0.2 and 0.6, β is between about 0.2 and 0.6, γ is between about 0 and 0.3, δ is between about 0 and 0.15, and z is between about 0 and 0.2. Adding the above metal and fluorine dopants affects capacity, impedance, and stability of the layered oxide structure during electrochemical cycling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.