发明名称 |
MATERIAU NANOSTRUCTURE, PROCEDE POUR SA PREPARATION. |
摘要 |
The invention relates to a nanostructured material. The material is a nanostructured carbonaceous material composed of agglomerates of small needles of Li1+αV3O8 and of &bgr;-LixV2O5 (0.1≦̸α≦̸0.25 and 0.03≦̸x≦̸0.667) surrounded by a noncontinuous layer of spherical carbon particles. It is obtained by a process consisting in preparing a carbonaceous precursor gel by bringing carbon, α-V2O5 and a Li precursor into contact in amounts such that the ratio of the [V2O5]/[Li] concentrations is between 1.15 and 1.5 and that the (carbon)/(carbon+V2O5+Li precursor) ratio by weight is from 10 to 15 and in subjecting the gel to a heat treatment comprising a 1st stage at 80° C.-150° C. for 3-12 h and a 2nd stage between 300° C. and 350° C. for 10 min to 1 hour, under an nitrogen or argon atmosphere. Applications: positive electrode active material. |
申请公布号 |
FR2877146(B1) |
申请公布日期 |
2007.01.19 |
申请号 |
FR20040011243 |
申请日期 |
2004.10.22 |
申请人 |
BATSCAP SOCIETE ANONYME;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS |
发明人 |
GAUBICHER JOEL;GUYOMARD DOMINIQUE;DUBARRY MATTHIEU;MOREAU PHILIPPE;DESCHAMPS MARC |
分类号 |
C01D15/02;C01G31/02;H01M4/02;H01M4/133;H01M10/052;H01M10/0525;H01M10/0562;H01M10/0565;H01M10/36 |
主分类号 |
C01D15/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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