Positive active material for rechargeable lithium batteries and method of preparing the same
US6797435B2 · kind B2 · utility
30Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Jul 13, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive active material includes a core including a lithiated compound, and at least two surface-treatment layers formed on the core. The surface-treatment layer includes at least one compound selected from the group consisting of a coating-element-included hydroxide, a coating-element-included oxyhydroxide, a coating-element-included oxycarbonate, and a coating-element-included hydroxycarbonate. The coating element is selected from the group consisting of Mg, Al, Co, K, Na, Ca, Si, Ti, Sn, V, Ge, Ga, B, and As.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.