Method of producing positive electrode active material and nonaqueous electrolyte battery using the same
US8865349B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 20, 2006 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Apr 4, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a positive electrode active material that has rate characteristics suitable for nonaqueous electrolyte batteries and particularly nonaqueous electrolyte secondary batteries, a method by which this positive electrode active material can be easily mass produced, and a high-performance nonaqueous electrolyte battery that has a positive electrode active material obtained by this method.The present invention relates to a method of producing a positive electrode active material, the method comprising a step of mixing a carbon source with lithium manganese phosphate LiMnPO4 or a compound LiMn1-xMxPO4 (where, 0≦x<1 and M is at least one metal element selected from the group consisting of Co, Ni, Fe, Zn, Cu, Ti, Sn, Zr, V, and Al) containing lithium manganese phosphate LiMnPO4 as a solid solution composition, and heat treating the obtained mixture under an inert gas atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.