| 发明名称 |
Lithium and vanadium Oxide li1+aV3O8 (0,1< a < 0,25), method for the preparation thereof |
| 摘要 |
The invention relates to a lithium vanadium oxide. The oxide corresponds to the formula Li1+αV3O8 (0.1≰α≰0.25) and 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 bringingα-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 1st stage at 80° C.-150° C. for 3 h to 15 days and a 2nd stage between 250° C. and 350° C. for 4 min to 1 hour, under a nitrogen or argon atmosphere. Applications: positive electrode active material.
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| 申请公布号 |
US2010112440(A1) |
申请公布日期 |
2010.05.06 |
| 申请号 |
US20050665932 |
申请日期 |
2005.10.18 |
| 申请人 |
GUYOMARD DOMINIQUE;GAUBICHER JOEL;DESCHAMPS MARC;DUBARRY MATTHIEU;MOREL BENOIT |
发明人 |
GUYOMARD DOMINIQUE;GAUBICHER JOEL;DESCHAMPS MARC;DUBARRY MATTHIEU;MOREL BENOIT |
| 分类号 |
H01M4/485;H01M4/131;H01M4/136;H01M4/48;H01M4/58;H01M4/62;H01M4/88;H01M10/0525;H01M10/36 |
主分类号 |
H01M4/485 |
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