Synthesis of nanoparticles of lithium metal phosphate positive material for lithium secondary battery
US8313863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2006 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Jan 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Novel process for the preparation of finely divided, nano-structured, olivine lithium metal phosphates (LiMPO4) (where metal M is iron, cobalt, manganese, nickel, vanadium, copper, titanium and mix of them) materials have been developed. This so called Polyol” method consists of heating of suited precursor materials in a multivalent, high-boiling point multivalent alcohol like glycols with the general formula HO—(—C2H4O—), —H where n=1-10 or HO—(—C3H6O—)n—H where n=1-10, or other polyols with the general formula HOCH2—(—C3H5OH—)n—H where n=1-10, like for example the tridecane-1,4,7,10,13-pentaol. A novel method for implementing the resulting materials as cathode materials for Li.-ion batteries is also developed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.