Lithium iron phosphate having oxygen vacancy and doped in the position of Fe and method of quick solid phase sintering for the same
US8241521B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a lithium ion cathode material lithium iron phosphate having oxygen vacancy and doped in the position of Fe and a preparation method of quick micro-wave sintering for the same. The molecular formula of the product in present invention is expressed as LiFe1-x-aMeaMxPO4-yNz, wherein Me is one or more elements selected from Mg, Mn or Nd, and M is one or more elements selected from Li, Na, K, Ag or Cu; 0≦x≦0.1, 0<a≦0.1, 0<y≦0.5, 0≦z≦0.5, wherein x and z can not be 0 simultaneously. The quick micro-wave sintering preparation method in the present invention has advantages of high production efficiency, low energy consumption, good batch stability of the prepared product, excellent rate performance and cycle performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.