Method for synthesis of carbon-coated redox materials with controlled size
    1.
    发明授权
    Method for synthesis of carbon-coated redox materials with controlled size 有权
    用于合成具有受控尺寸的碳涂覆的氧化还原材料的方法

    公开(公告)号:US07601318B2

    公开(公告)日:2009-10-13

    申请号:US10362763

    申请日:2001-09-21

    IPC分类号: H01B1/08 H01M4/58 C01B17/96

    摘要: A method for the synthesis of compounds of the formula C—LixM1−yM′y(XO4)n, where C represents carbon cross-linked with the compound LixM1−yM′y(XO4)n, in which x, y and n are numbers such as 0≦x≦2, 0≦y≦0.6, and 1≦n≦1.5, M is a transition metal or a mixture of transition metals from the first period of the periodic table, M′ is an element with fixed valency selected among Mg2+, Ca2+, Al3+, Zn2+ or a combination of these same elements and X is chosen among S, P and Si, by bringing into equilibrium, in the required proportions, the mixture of precursors, with a gaseous atmosphere, the synthesis taking place by reaction and bringing into equilibrium, in the required proportions, the mixture of the precursors, the procedure comprising at least one pyrolysis step of the carbon source compound in such a way as to obtain a compound in which the electronic conductivity measured on a sample of powder compressed at a pressure of 3750 Kg·cm−2 is greater than 10−8 S·cm−1. The materials obtained have excellent electrical conductivity, as well a very improved chemical activity.

    摘要翻译: 用于合成式C-LixM1-yM'y(XO4)n的化合物的方法,其中C表示与化合物LixM1-yM'y(XO4)n交联的碳,其中x,y和n为 数字如0 <= x <= 2,0 <= y <= 0.6,1 <= n <= 1.5,M是过渡金属或来自周期表第一周期的过渡金属的混合物,M' 是选自Mg2 ​​+,Ca2 +,Al3 +,Zn2 +或这些相同元素的组合的固定化合价元素,X选自S,P和Si,通过以所需比例以所需比例将前体混合物与 通过反应进行合成,并以所需比例使所述前体的混合物达到平衡,所述前体的混合物以包含至少一个碳源化合物的热解步骤的方式得到其中 在压力为3750Kg·cm-2压缩的粉末样品上测量的电子电导率大于10-8Scm-1。 获得的材料具有优异的导电性,以及非常改进的化学活性。