发明名称 |
HOCHLEISTUNGS-LITHIUM-TITANIUM-SPINELL LI4TI5O12 FÜR ELEKTRODENMATERIAL |
摘要 |
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> |
申请公布号 |
AT429715(T) |
申请公布日期 |
2009.05.15 |
申请号 |
AT20020747133T |
申请日期 |
2002.07.29 |
申请人 |
XOLIOX SA;ALTAIRNANO, INC |
发明人 |
SPITLER, TIMOTHY;PROCHAZKA, JAN;KAVAN, LADISLAV;GRAETZEL, MICHAEL;SUGNAUX, FRANCOIS |
分类号 |
C01B13/36;C01G23/00;C01G23/053;C09C1/36;H01M4/04;H01M4/131;H01M4/1391;H01M4/48;H01M4/485;H01M8/02;H01M10/052;H01M10/0525;H01M10/36 |
主分类号 |
C01B13/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|