Positive electrode active material and method of producing the same and nonaqueous electrolyte battery having positive electrode containing positive electrode active material
US7964118B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 20, 2006 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Mar 26, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an olivine-type positive electrode active material that is an inexpensive and very safe positive electrode active material that also exhibits excellent battery properties even at high energy densities. The present invention also provides a method of producing this olivine-type positive electrode active material and a nonaqueous electrolyte battery that has a positive electrode that contains this olivine-type positive electrode active material. The present invention relates to a positive electrode active material that comprises an olivine-type lithium manganese phosphate compound represented by the following general formula (1)LixMnyMaPO4 (1)(in the formula, 0<x<2, 0<y<1, 0<a<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) and that has a particle diameter of 10 to 500 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.