Process for producing Li4Ti5O12 and electrode materials
Nanostructured Li4Ti5O12 (spinel) was prepared via a method employing lithium ethoxide and Ti(IV) alkoxides as the starting reagents. The optimized materials contained less than 1% of anatase as the main impurity and, depending on the synthetic conditions, they exhibited the BET surface areas of 5-183 m<2>/g. Trace amount of anatase in Li4Ti5O12 was conveniently determined by cyclic voltammetry of Li-insertion. Thin-film electrodes from nanostructured Li4Ti5O12 spinel exhibit excellent activity towards Li-insertion, even at charging rates as high as 250C. This behavior compares favorably with that of microcrystalline Li4Ti5O12 made by conventional high-temperature solid-state synthesis. A use of this compound in lithium secondary batteries is also disclosed. <IMAGE>
8184067
Alternative title(s) : (de) Verfahren zur herstellung von li4ti5o12 und elektrodenmaterial (fr) Procédé de fabrication de li4ti5o12 et matériau d'électrode (en) Process for producing li4ti5o12 and electrode materials
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CA2455851 | CA | C | 2010-02-09 |
DK1412993 | DK | T3 | 2009-07-13 |
US7547490 | US | B2 | 2009-06-16 |
DE60232079 | DE | D1 | 2009-06-04 |
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EP1412993 | EP | B1 | 2009-04-22 |
JP4252897 | JP | B2 | 2009-04-08 |
AU2008203015 | AU | A1 | 2008-07-31 |
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WO03012901 | WO | A1 | 2003-02-13 |
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