Positive electrode active material for a lithium secondary battery, method for producing same, and lithium secondary battery comprising same
US9203077B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2011 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Dec 3, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a positive electrode active material for a lithium secondary battery having improved thermal stability, a method for producing the positive electrode active material, and a lithium secondary battery containing the same. The positive electrode active material may be represented by the following Chemical Formula 1 and contain particles having an average particle size of 200 nm to 1 μm, wherein the surfaces of the particles are coated with a uniform carbon coating layer.LiaMn1-xMxPO4 [Chemical Formula 1](Where, M is any one or a mixture of two or more selected from Mg, Fe, Co, Cr, Ti, Ni, Cu, Zn, Zr, Nb, and Mo, and a and x satisfy the following Equations: 0.9≦a≦1.1 and 0≦x<0.5.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.