| 发明名称 |
LITHIUM AND VANDIUM OXIDE Li1+ V3O8 (0,1 0,25) METHOD FOR THE PREPARATION THEREOF |
| 摘要 |
The invention relates to a lithium vanadium oxide which corresponds to the formula Li1+alphaV3O8 (0.1@alpha@0.25). It is composed of agglomerates of small needles having a length l from 400 to 1000 nm, a width w such that 10<l/w<100 and a thickness t such that 10<l/t<100. It is obtained by a process consisting in preparing a precursor gel by bringing alpha-V2O5 and a Li precursor into contact in amounts such that the ratio of the concentrations [V2O5]/[Li] is between 1.15 and 1.5 and in subjecting the gel to a heat treatment comprising a first stage at 80° C.-150° C. for 3 h to 15 days and a second stage between 250° C. and 350° C. for 4 min to 1 hour, under a nitrogen or argon atmosphere. It is useful as an active material of a positive electrode. |
| 申请公布号 |
EP1831110(A1) |
申请公布日期 |
2007.09.12 |
| 申请号 |
EP20050809319 |
申请日期 |
2005.10.18 |
| 申请人 |
BATSCAP;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE |
发明人 |
GAUBICHER, JOEL;MOREL, BENOIT;DUBARRY, MATTHIEU;GUYOMARD, DOMINIQUE;DESCHAMPS, MARC |
| 分类号 |
H01M4/131;C01G31/00;H01M4/136;H01M4/48;H01M4/485;H01M4/58;H01M4/62;H01M10/0525;H01M10/36 |
主分类号 |
H01M4/131 |
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