Titanium and dense lithium mixed oxide powder compound, method for producing said compound and compound-containing electrode
US7682596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2005 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Feb 9, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A powdery compound selected from the group consisting of Li4Ti5O12 and its derivatives selected from the group consisting of Li4−xMxTi5O12 and Li4Ti5−yNyO12 (x and y between 0 and 0.2, M and N selected from the group consisting of Na, K, Mg, Nb, Al, Ni , Co, Zr, Cr, Mn, Fe, Cu, Zn, Si and Mo), used as active material of an electrode for a lithium storage battery, consists of unitary particles having a diameter not greater than 1 μm and 10-50% volume agglomerated particles having a diameter not greater than 100 μm wherein the agglomerated particles formed by agglomeration of said unitary particles. The method for producing such a compound preferably consists in grinding the synthesized oxide for a duration comprised between 24 hours and 48 hours in a planetary mill and in then performing thermal treatment at a temperature comprised between 450° C. and 600° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.