| 发明名称 |
SULPHATES OF USE AS ELECTRODE MATERIALS |
| 摘要 |
The invention relates to an electrode material.;Said material is characterized in that it contains, as positive electrode active material, at least one sulphate of iron in the +II oxidation state and of alkali metal corresponding to the formula (Na1−aLib)xFey(SO4), (I) in which the subscripts a, b, x, y and z are chosen so as to ensure the electroneutrality of the compound, with 0≦a≦1, 0≦b≦1, 1≦x≦3, 1≦y≦2, 1≦z≦3, and 2≦(2z−x)/y<3 so that at least one portion of the iron is in the +II oxidation state, with the exclusion of the compound Li2Fe2(SO4)3.;It is of use in particular as a positive electrode material in an alkali metal ion battery. |
| 申请公布号 |
US2015017322(A1) |
申请公布日期 |
2015.01.15 |
| 申请号 |
US201314378699 |
申请日期 |
2013.02.27 |
| 申请人 |
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFQUE ;UNIVERSITE DE PICARDIE JULES VERNE |
发明人 |
Reynaud Marine;Ati Mohamed;Choland Jean-Noel;Tarascon Jean-Marie |
| 分类号 |
H01M4/136;H01M4/58;H01M4/62;H01M4/1397 |
主分类号 |
H01M4/136 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. Positive electrode material, said positive electrode material comprising, as positive electrode active material, at least one sulphate of iron in the +II oxidation state and of alkali metal corresponding to the formula (Na1−aLib)xFey(SO4)2 (I) in which the subscripts a, b, x, y and z are chosen so as to ensure the electroneutrality of the compound, with 0≦a≦1, 0≦b≦1, 1≦x≦3, 1≦y≦2, 1≦z≦3, and 2≦(2z−x)/y<3 so that at least one portion of the iron is in the +II oxidation state, with the exclusion of the compound Li2Fe2(SO4)3. |
| 地址 |
Paris FR |
