| 发明名称 | Method for the preparation of Li<sub>1+α</sub>V<sub>3</sub>O<sub>8 </sub> | ||
| 摘要 | The invention relates to a lithium vanadium oxide which corresponds to the formula Li1+αV3O8 (0.1≦α≦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 α-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 | US9373835(B2) | 申请公布日期 | 2016.06.21 |
| 申请号 | US201313857832 | 申请日期 | 2013.04.05 |
| 申请人 | BATSCAP;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE | 发明人 | Guyomard Dominique;Gaubicher Joel;Deschamps Marc;Dubarry Matthieu;Morel Benoit |
| 分类号 | H01M4/131;C01G31/00;H01M4/136;H01M4/485;H01M4/58;H01M4/62;H01M10/0525 | 主分类号 | H01M4/131 |
| 代理机构 | Sofer & Haroun, LLP | 代理人 | Sofer & Haroun, LLP |
| 主权项 | 1. A composite positive electrode for a lithium battery, comprising a composite material which comprises lithium oxide Li1+αV3O8 (0.1≦α≦0.25) composed of agglomerates of small needles, said 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. | ||
| 地址 | Odet Ergue-Gaberic FR | ||