Olivine-type cathode active material precursor for lithium battery, olivine-type cathode active material for lithium battery, method for preparing the same and lithium battery with the same
US9570746B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2009 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Jul 7, 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 provides an olivine-type positive active material precursor for a lithium battery that includes MXO4-zBz (wherein M is one element selected from the group consisting of Fe, Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Ti, Zn, Al, Ga, Mg, B, and a combination thereof, X is one element selected from the group consisting of P, As, Bi, Sb, and a combination thereof, B is one element selected from the group consisting of F, S, and a combination thereof, and 0≦z≦0.5) particles, and the precursor has a particle diameter of 1 to 20 μm, a tap density of 0.8 to 2.1 g/cm3, and a specific surface area of 1 to 10 m2/g. The olivine-type positive active material prepared using the olivine-type positive active material precursor has excellent crystallinity of particles, a large particle diameter, and a high tap density, and therefore shows excellent electrochemical characteristics and capacity per unit volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.