Negative electrode for lithium batteries
    6.
    发明申请
    Negative electrode for lithium batteries 有权
    锂电池用负极

    公开(公告)号:US20070042273A1

    公开(公告)日:2007-02-22

    申请号:US10555882

    申请日:2004-04-26

    IPC分类号: H01M6/18

    摘要: An active material for high-voltage negative electrodes (>1 V vs. Li) of secondary rechargeable lithium batteries is disclosed. Chemical composition is represented by the general formula Li2+vTi3−WFeXMyM′ZO7−α, where M and M′ are metal ions having an ionic radius between 0.5 and 0.8 A and forming an octahedral structure with oxygen, like Ti3+, Co2+, Co3+, Ni2+, Ni3+, Cu2+, Mg2+, Al3+, In3+, Sn4+, Sb3+, Sb5+, α is related to the formal oxidation numbers n and n′ of M and M′ by the relation 2α=v+4w −3x−ny−n′z and the ranges of values are −0.5≦V≦0.5, 0≦w≦0.2, x>0, y+z>0 and x+y+z≦0.7. The structure is related to that of ramsdellite for all the compositions. The negative active material is prepared by ceramics process wherein lithium oxide, titanium oxide, iron oxide, M and/or M′ oxide are used as starting material for synthesis. Inorganic or organic solid precursors of the oxides can also be used instead. After reactant dispersion the mixture is fired. The resulting electrochemically active material provides low working voltage and capacity with excellent cycling capabilities at both low and high current densities.

    摘要翻译: 公开了二次可再充电锂电池的高电压负极(> 1V对Li)的活性材料。 化学成分由通式Li 2 + v 3 Ti 3 -W 3 Fe x M M'表示, 其中M和M'是离子半径在0.5和0.8A之间的金属离子,并且与氧形成八面体结构,如Ti 3+,3+,3+,3+,3+,3+,3+,3+,3+,3++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ,Cu 2+,Mg 2+,N 3+,3+,Sn 4+, Sb 3+,Sb 5+,α与M和M'的形式氧化数n和n'有关,其关系为2alpha = v + 4w -3x-ny-n'z,值的范围为-0.5 <= V <= 0.5,0 <= w <= 0.2,x> 0,y + z> 0,x + y + z < 0.7。 该结构与所有组合物的ramsdellite相关。 负极活性物质通过陶瓷工艺制备,其中使用氧化锂,氧化钛,氧化铁,M和/或M'氧化物作为合成起始材料。 也可以使用氧化物的无机或有机固体前体。 反应物分散后,将混合物烧制。 所得到的电化学活性材料在低电流密度和高电流密度下提供低工作电压和容量以及优异的循环能力。

    Negative electrode for lithium batteries
    8.
    发明授权
    Negative electrode for lithium batteries 有权
    锂电池用负极

    公开(公告)号:US07794884B2

    公开(公告)日:2010-09-14

    申请号:US10555882

    申请日:2004-04-26

    IPC分类号: H01M6/18

    摘要: An active material for high-voltage negative electrodes (>1V vs. Li) of secondary rechargeable lithium batteries is disclosed. Chemical composition is represented by the general formula Li2+vTi3−WFeXMyM′ZO7−α, where M and M′ are metal ions having an ionic radius between 0.5 and 0.8 A and forming an octahedral structure with oxygen, like Ti3+, Co2+, Co3+, Ni2+, Ni3+, Cu2+, Mg2+, Al3+, In3+, Sn4+, Sb3+, Sb5+, α is related to the formal oxidation numbers n and n′ of M and M′ by the relation 2α=v+4w−3x−ny−n′z and the ranges of values are −0.5≦V≦0.5, 0≦w≦0.2, x>0, y+z>0 and x+y+z≦0.7. The structure is related to that of ramsdellite for all the compositions. The negative active material is prepared by ceramics process wherein lithium oxide, titanium oxide, iron oxide, M and/or M′ oxide are used as starting material for synthesis. Inorganic or organic solid precursors of the oxides can also be used instead. After reactant dispersion the mixture is fired. The resulting electrochemically active material provides low working voltage and capacity with excellent cycling capabilities at both low and high current densities.

    摘要翻译: 公开了二次可再充电锂电池的高电压负极(> 1V对Li)的活性材料。 化学成分由通式Li2 + vTi3-WFeXMyM'ZO7-α表示,其中M和M'是离子半径在0.5和0.8A之间的金属离子,并与氧形成八面体结构,如Ti3 +,Co2 +,Co3 + Ni2 +,Ni3 +,Cu2 +,Mg2 +,Al3 +,In3 +,Sn4 +,Sb3 +,Sb5 +,α与M和M'的形式氧化数n和n'有关系2α= v + 4w-3x-ny-n' z,值的范围为-0.5&amp; nlE; V&nlE; 0.5,0&nlE; w&nlE; 0.2,x> 0,y + z> 0和x + y + z&nlE; 0.7。 该结构与所有组合物的ramsdellite相关。 负极活性物质通过陶瓷工艺制备,其中使用氧化锂,氧化钛,氧化铁,M和/或M'氧化物作为合成起始材料。 也可以使用氧化物的无机或有机固体前体。 反应物分散后,将混合物烧制。 所得到的电化学活性材料在低电流密度和高电流密度下提供低工作电压和容量以及优异的循环能力。

    Negative Electrode Composite Material, Production Method, Negative Electrode and Lithium-Ion Battery
    9.
    发明申请
    Negative Electrode Composite Material, Production Method, Negative Electrode and Lithium-Ion Battery 有权
    负极复合材料,生产方法,负极和锂离子电池

    公开(公告)号:US20080003502A1

    公开(公告)日:2008-01-03

    申请号:US11572889

    申请日:2005-07-28

    IPC分类号: H01M4/48 B22F3/10 H01M4/38

    摘要: This invention relates to a negative electrode material, a method for producing this material, and to a negative electrode and a lithium-ion battery comprising this material. The material of the invention comprises an active phase consisting of a material M based on Al, Si, Sn, Sb or a mixture thereof, and a support phase consisting of a material XaYbOc, where: O is an oxygen; Y is a cation with oxidation degree m=3, 4, 5 or 6; X is a cation with oxidation degree d=1, 2, 3, 4 or 5, X ensuring the electroneutrality of XaYbOc; and where: c is such that 2≦c≦10; b is such that 1≦b≦4; and a=(2c−bm)/d. An interface of mixed composition exists between the XaYbOc material and the active phase M, the said interface consisting of the elements M, X, Y and O. XaYbOc may be for example BPO4. The production method comprises a first heat treatment of a mixture of oxides of X and Y to obtain a material XYO4; a cooling followed by a grinding of the material obtained; a mixing of the ground material with M; a second heat treatment of the mixture obtained to obtain the said material of the invention; and a cooling of the said material.

    摘要翻译: 本发明涉及一种负极材料,该材料的制造方法以及负极和包含该材料的锂离子电池。 本发明的材料包括由基于Al,Si,Sn,Sb或其混合物的材料M组成的活性相和由材料X a a B b组成的载体相 其中:O是氧; Y是氧化度m = 3,4,5或6的阳离子; X是具有氧化度d = 1,2,3,4或5的阳离子,X确保X B C 的电中性 >; 并且其中:c为2 <= c <= 10; b是1 <= B <= 4; 和A =(2C-bm)/ d。 混合组合物的界面存在于材料与活性相M之间,所述界面由元素M ,X,Y和O.可以是例如BPO 4 O。 制备方法包括对X和Y的氧化物的混合物进行第一次热处理以获得XYO 4的材料; 冷却,然后研磨所得材料; 研磨材料与M的混合; 获得的混合物的第二次热处理以获得本发明的所述材料; 和所述材料的冷却。

    Supported bimetallic catalyst with a strong interaction between a group VIII metal and tin, and its use in a catalytic reforming process
    10.
    发明授权
    Supported bimetallic catalyst with a strong interaction between a group VIII metal and tin, and its use in a catalytic reforming process 有权
    具有VIII族金属和锡之间强相互作用的负载双金属催化剂及其在催化重整过程中的应用

    公开(公告)号:US06605566B2

    公开(公告)日:2003-08-12

    申请号:US09934656

    申请日:2001-08-23

    IPC分类号: B01J2300

    摘要: A novel supported bimetallic catalyst comprises a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with the group VIII metal in the catalyst in the reduced state. In the partially oxidized state, the catalyst of the invention contains at least 10% of tin in the form of a reduced tin species with oxidation state 0, said species having an isomer shift in the range 0.80 to 2.60 mm/s and a quadrupolar splitting in the range 0.65 to 2.00 mm/s. The invention also concerns the preparation of said catalyst, and processes using said catalyst for transforming hydrocarbons into aromatic compounds, such as gasoline reforming processes and aromatic production processes.

    摘要翻译: 一种新型的负载型双金属催化剂包括Ⅷ族金属如铂,和锡,其中至少一部分与还原态催化剂中的Ⅷ族金属强烈相互作用。 在部分氧化状态下,本发明的催化剂含有氧化态为0的还原锡物质形式的至少10%的锡,所述物质具有在0.80至2.60mm / s范围内的异构体移动和四极分裂 在0.65-2.00mm / s的范围内。 本发明还涉及所述催化剂的制备,以及使用所述催化剂将烃转化为芳族化合物的方法,例如汽油重整方法和芳族生产方法。