发明名称 |
Synthesis of crystalline nanometric LiFeMPO<sub>4</sub> |
摘要 |
The invention relates to crystalline nanometric olivine-type LiFe1-xMxPO4 powder with M being Co and/or Mn, and 0≦x≦1, with small particle size and narrow particle size distribution. A direct precipitation process is described, comprising the steps of: providing a water-based mixture having at a pH between 6 and 10, containing a dipolar aprotic additive, and Li(I), Fe(II), P(V), and Co(II) and/or Mn(II) as precursor components; heating said water-based mixture to a temperature less than or equal to its boiling point at atmospheric pressure, thereby precipitating crystalline LiFe1-xMxPO4 powder. An extremely fine particle size is obtained of about 80 nm for Mn and 275 nm for Co, both with a narrow distribution. |
申请公布号 |
US9051184(B2) |
申请公布日期 |
2015.06.09 |
申请号 |
US201113267135 |
申请日期 |
2011.10.06 |
申请人 |
Umicore;Centre National de la Recherche Scientifique |
发明人 |
Levasseur Stéphane;Van Thournout Michèle;Gibot Pierre;Masquelier Christian |
分类号 |
H01B1/08;H01B1/06;C01B25/45;B82Y30/00;H01M4/136;H01M4/58;H01M4/02;H01M10/052 |
主分类号 |
H01B1/08 |
代理机构 |
Brinks Gilson & Lione |
代理人 |
Brinks Gilson & Lione |
主权项 |
1. A process for preparing crystalline LiFe1-xMxPO4 powder where M is one or both of Co and Mn, and 0<x<1, comprising the steps of:
providing a water-based mixture having a pH between 6 and 10, and containing a dipolar aprotic additive and Li(I), Fe(II), P(V) and one or both of Co(II) and Mn(II) as precursor components; and heating said water-based mixture to a temperature less than or equal to its boiling point at atmospheric pressure, thereby precipitating crystalline LiFe1-xMxPO4 powder. |
地址 |
Brussels BE |