PROCEDE DE SYNTHESE DE MATERIAU A BASE DE LIXM1-YM'Y(XO4)N
    2.
    发明公开
    PROCEDE DE SYNTHESE DE MATERIAU A BASE DE LIXM1-YM'Y(XO4)N 有权
    合成材料AUF基础VON LIXM1-YM'Y(XO4)N

    公开(公告)号:EP1325526A1

    公开(公告)日:2003-07-09

    申请号:EP01973907.7

    申请日:2001-09-21

    摘要: The invention concerns a synthesis method for a material consisting of particles comprising a core and a coating and/or being interconnected by a carbon cross-linkage, the core of said particles including at least a compound of formula LixM1-yM'y(XO4)n wherein: x, y and n are numbers such that 0≤ x ≤2, 0 ≤ y ≤0.6 and 1 ≤ n ≤1.5; M is a transition metal; M' is a element of fixed valency, and the synthesis being performed by reacting and balancing the mixture of precursors, with a reducing gas atmosphere, so as to bring the transition metal(s) to the desired degree of valency, the synthesis being carried out in the presence of a carbon source called conductive carbon which is pyrolyzed. The resulting materials exhibit excellent electrical conductivity and a highly enhanced chemical activity. M' can be selected among Mg?2+, Ca2+ Al3+, Zn2+¿ or a combination of those elements, X is selected among S, P, and Si. Said material can be used as active electrode material in batteries.

    摘要翻译: 制备含有过渡金属,固定的价态金属和磷酸盐,硫酸盐或硅酸盐形式的锂的碳桥化合物。 式CLi xM 1-yM 1> y(XO 4)n(A)的化合物的合成包括以所需比例平衡和/或均匀的均匀混合物,其包含:(a)氧化态的M源或多或少 最终化合物中的金属比; (b)元素M 1>的源; (c)锂源; (d)任选的X的源化合物; 和(e)导电碳源。 C:桥连碳与化合物CLi xM 1-yM 1> y(XO 4)n; x:0-2; y:0-0.6; n:1-1.5; M:过渡金属或周期表第一系列的混合物; M 1> Mg 2+>,Ca 2+>,Al 3+>或Zn 2+>或它们的组合; X,S,P或Si源M,M 1>,Li和X可以在至少一个阶段中引入,并且合成以气态气氛中所需比例的热力学或动力学平衡进行,以便施加氧化 过渡金属的状态达到所需的化合价; 对于Fe,Mn,Co,Ni,该化合价优选为2,对于Ti和V,该价数为3或4。这由气态气氛的组成,反应温度和源(c)化合物相对于(a ),(b)和(d)。 该方法包括化合物(e)的热解阶段,以获得化合物,其中在压力大于或等于3000,优选3750Kg·cm -2>的压实粉末上测量的电子传导性大于10- 8> S.cm -1>。 对于所获得的化合物(A)和含有这些材料的电化学电池,还包括独立权利要求。

    PROCEDE DE SYNTHESE DE MATERIAUX REDOX ENROBES DE CARBONE A TAILLE CONTROLEE
    3.
    发明公开
    PROCEDE DE SYNTHESE DE MATERIAUX REDOX ENROBES DE CARBONE A TAILLE CONTROLEE 有权
    合成香薰香薰香精IT EN EN SE ER SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE

    公开(公告)号:EP1325525A1

    公开(公告)日:2003-07-09

    申请号:EP01973906.9

    申请日:2001-09-21

    摘要: The invention concerns a method for the synthesis of compounds of formula C-LixM1-y(XO4)n wherein: x, y and n represent numbers such that 0 ≤ x 2, 0 ≤ m ≤ 0.6 and 1 ≤ n ≤ 1.5; M is a transition metal or a mixture of transition metals of the first line of the periodic table; M' is an element with fixed valency selected among Mg?2+, Ca2+, Al3+,Zn2+¿, or a combination of said elements; and X is selected among S, P and Si, by balancing in appropriate proportions a mixture or precursors, the synthesis being performed by reacting and balancing a mixture of precursors in the appropriate proportions of precursors, with a gaseous atmosphere, the method comprising at least a step of pyrolyzing a carbon-producing compound so as to obtain a compound whereof the electronic conductivity, measured on a sample of compacted powder, at a pressure of 3750 Kg.cm-2, is higher than 10?-8 S.cm-1¿. The resulting materials are thus formed by the particles of the compound coated with a conductive carbon layer.

    摘要翻译: 制备含有过渡金属,固定的价态金属和磷酸盐,硫酸盐或硅酸盐形式的锂的碳桥化合物。 式CLi xM 1-yM 1> y(XO 4)n(A)的化合物的合成包括以所需比例平衡和/或均匀的均匀混合物,其包含:(a)氧化态的M源或多或少 最终化合物中的金属比; (b)元素M 1>的源; (c)锂源; (d)任选的X的源化合物; 和(e)导电碳源。 C:桥连碳与化合物CLi xM 1-yM 1> y(XO 4)n; x:0-2; y:0-0.6; n:1-1.5; M:过渡金属或周期表第一系列的混合物; M 1> Mg 2+>,Ca 2+>,Al 3+>或Zn 2+>或它们的组合; X,S,P或Si源M,M 1>,Li和X可以在至少一个阶段中引入,并且合成以气态气氛中所需比例的热力学或动力学平衡进行,以便施加氧化 过渡金属的状态达到所需的化合价; 对于Fe,Mn,Co,Ni,该化合价优选为2,对于Ti和V,该价数为3或4。这由气态气氛的组成,反应温度和源(c)化合物相对于(a ),(b)和(d)。 该方法包括化合物(e)的热解阶段,以获得化合物,其中在压力大于或等于3000,优选3750Kg·cm -2>的压实粉末上测量的电子传导性大于10- 8> S.cm -1>。 对于所获得的化合物(A)和含有这些材料的电化学电池,还包括独立权利要求。